body{margin:0;font-family:arial;font-size:1rem;font-weight:400;line-height:1.5;color:#3a4353;text-align:left;background-color:#fff}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem}.h1,.h2,.h3,.h4,.h5,.h6,h1,h2,h3,h4,h5,h6{margin-bottom:.5rem;font-weight:700;line-height:1.4}.h1,h1{font-size:2rem}.h2,h2{font-size:1.5rem}.h3,h3{font-size:1.3125rem}p{margin-top:0;margin-bottom:1rem}ul{margin-top:0;margin-bottom:1rem}li,ul{list-style:none;padding:0}a{text-decoration:none!important;color:#000}#_bt_helps,._bkt_report,.basic_ck_item_ic_ck,.basic_radio_check,.bt_show_hd::after,.chestnut_i,.icon-bt,.jp-pause,.jp-play,.m_icon{background-image:url(/file/common/baitap/image/m_icon.png)}.m-f-info{background-color:#232b35;padding:4vw;color:#fff}.m-fi-domain-1{color:#ff0}.m-fi-row .m-f-orange{color:#f08421}.navigation_tree{display:none}.t_scr{color:#fff}.m-cat-name-red{background-color:#dc5856;color:#fff;text-transform:uppercase;padding:6px 3%;font-size:28px}.animated{-webkit-animation-duration:.5s;animation-duration:.5s;-webkit-animation-fill-mode:both;animation-fill-mode:both}@-webkit-keyframes slideInDown{from{-webkit-transform:translate3d(0,-100%,0);transform:translate3d(0,-100%,0);visibility:visible}to{-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}}@keyframes slideInDown{from{-webkit-transform:translate3d(0,-100%,0);transform:translate3d(0,-100%,0);visibility:visible}to{-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0)}}.slideInDown{-webkit-animation-name:slideInDown;animation-name:slideInDown}.lt123_box_gopy{background:#fff;box-shadow:1px 2px 10px #525a5f;border:1px dashed #00bcd4;top:127px;height:480px;right:10px;position:absolute;width:90%;z-index:9999}.lt123_gopy_title{cursor:move;font-size:22px;color:#3493bc;background-repeat:no-repeat;border-bottom:1px solid #d4d3d1;height:45px;margin-left:20px;margin-top:15px;width:86%}.lt123_gopy_noti{color:#7c7c7c;font-family:Times New Roman;font-style:italic;line-height:23px;margin-left:20px;margin-top:10px;text-align:justify;width:86%}.lt123_gopy_area{border:1px solid #dfdfdf;border-radius:5px;font-family:Times New Roman;font-style:italic;height:155px;font-size:17px;margin-left:11px;margin-bottom:15px;margin-top:20px;padding:10px 0 10px 12px;width:88%}.lt123_box_gopy .lt123_btn_sent{background-color:#3493bc;border-radius:5px;color:#fff;cursor:pointer;display:block;float:right;font-family:arial;margin-right:25px;margin-top:0;padding:10px 40px;text-align:center}.lt123_box_gopy .lt123_btn_close{color:#ed1c24;cursor:pointer;float:right;font-family:arial;margin-right:42px;margin-top:7px;padding:3px 5px}.lt123_box_gopy .technic_err{color:#7c7c7c;font-size:14px;font-style:italic;font-family:Times New Roman;margin-left:15px}.box_thank_send .thank_txt{margin-top:130px;padding-top:35px;text-align:center;font-family:Times New Roman;font-size:14px;font-style:italic;color:#7c7c7c}.box_thank_send .thank_txt span{color:#ed1c24}#lesson-detail-page .m-ldp-title .m-ldpt-name{cursor:pointer;vertical-align:middle;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;width:60vw;text-transform:none;padding:0 0 0 2vw;line-height:35px;font-size:20px;font-weight:700;display:inline-block}.back-arrow{width:17px;height:27px;background-position:-454px -96px;display:inline-block;vertical-align:middle}#lesson-detail-page .m-ldp-info{box-shadow:0 3px 3px #cecbcb;position:absolute;top:10px;width:100%}#lesson-detail-page .m-ldp-info .m-ldpi-left{margin-right:1vw;display:inline-block;padding:10px;font-size:18px;background-color:#fff981;border-radius:0 30px 30px 0;vertical-align:middle}#lesson-detail-page .m-ldp-info .m-ldpi-left .m-ldpil-time{padding:0 3vw;color:#8d7900}#lesson-detail-page .m-ldp-info .m-ldpi-score{background-color:#d55;font-size:18px;vertical-align:middle;padding:12px 16px;border-radius:12px}#lesson-detail-page .m-ldp-info .m-ldpi-err{cursor:pointer;vertical-align:middle;display:inline-block;padding:10px 10px 10px 0}.pull-right{float:right!important}._stt_q{display:none}._ab{position:absolute;top:0;left:0}.bg_btclass_cen{border-bottom:1px solid #d55;padding-bottom:20px}.bg_btclass_bottom{width:100%;text-align:center;padding:20px 0;max-width:450px;margin:0 auto}._box_post_ct{width:100%;font-size:18px;line-height:100%;position:relative}.basic_title_pr{color:#684228;text-align:center;font-weight:700;width:100%;float:left}.basic_content_gt{float:left;text-align:center;width:100%;line-height:196%;color:#0e5acc}.basic_segment{display:none;width:100%;height:auto;position:relative;background-color:#fff;padding:20px 0 30px;max-width:700px}.basic_title_part{color:#e84b00;font-weight:700;width:100%;margin-top:20px}.basic_content{width:100%;text-align:justify;color:#173366;clear:both;margin-bottom:10px;font-style:italic}.basic_alert_note{font-style:italic;text-align:center;clear:both}.basic_active{display:block}span#_bt_helps{background-position:-10px -292px;width:31px;height:31px;display:block;clear:both;margin-right:115px;position:absolute;bottom:21px;right:15px;z-index:99;cursor:pointer}.icon-bt-star{width:21px;height:20px;background-position:-199px -292px;margin:10px 2px;display:inline-block}.hide{display:none!important}.show{display:block!important}#basic_box{width:100%;padding:0}#basic_box table{width:100%!important;border-collapse:collapse;border:1px solid #ddd}#basic_box table td{border:1px solid #ddd;padding:5px;vertical-align:middle;text-align:center}#basic_box table,#basic_box table td{border:1px solid #e2dede;border-collapse:collapse;width:100%}.box_lesson{float:left;width:100%;text-align:justify;line-height:196%}.box_lesson .title{font-size:22px;color:#e84b00;font-weight:700;margin-bottom:20px;background:#ffd5cc none repeat scroll 0 0;border:1px solid pink;width:100px;text-transform:uppercase;border-radius:0 20px 20px 0;padding:5px 10px 2px}.box_lesson .content{float:left;width:100%;margin-bottom:10px}.basic_box a{color:#007f9f;text-decoration:underline;font-style:italic}#basic_main{padding-top:60px;width:100%;margin:15px auto}.bkt #basic_main{margin:35px auto;padding-top:0}.basic_segment .title_trans{font-weight:400;color:#cd6c03;font-style:italic;padding-top:10px}.basic_segment .title{color:#4c69ba;font-weight:700;border:1px solid #ddd;text-align:center;border-radius:4px;margin-bottom:22px;background:rgba(238,238,238,.22);padding:15px 2%;margin:0 2%}.basic_bt_ctrl{min-width: 270px;background:#ffb400;border-radius:40px;box-shadow:1px 2px 2px 0 #999;color:#fff;cursor:pointer;line-height:25px;padding:12px 20px;font-size:19px;border:none;position:relative;}.basic_bt_ctrl span{display:inline-block;vertical-align:middle}.icon-btn-check{width:21px;height:20px;background-position:-390px -184px;margin-left:10px;float:right;margin-top:3px}.bt_popup_result{background-image:url(/file/common/baitap/image/bt_result.png);width:100%;max-width:400px;position:absolute;z-index:999;bottom:120px;background-size:100% 100%;display:none}.bt_popup_result img{max-width:300px}.MathJax_Preview{display:none}.MathJax{display:inline-block}.basic_explain,.explain{padding:20px;margin:0 auto;text-align:center;line-height:30px;font-size:18px;color:#000;display:none}.basic_radio_check{width:18px;height:20px;display:inline-block}.basic_radio_check.basic_true,.item_radio_check.basic_true,.selectedText_p .basic_true{background-position:-264px -147px}.basic_radio_check.basic_false,.item_radio_check.basic_false,.selectedText_p .basic_false{background-position:-283px -147px}.item_radio_check{float:left;width:18px;height:18px}.basic_w30,.basic_w_30{float:left;width:30%}.basic_w70,.basic_w_70{float:left;width:70%;clear:right}.basic_w40,.basic_w_40{float:left;width:40%}.basic_w60,.basic_w_60{float:left;width:60%;clear:right}.basic_w5{float:left;width:15%}.basic_w95{float:left;width:85%;clear:right}.basic_w10{float:left;width:25%}.basic_w90{float:left;width:75%;clear:right;text-align:left}.space10{clear:both;height:10px}.space15{clear:both;height:15px}.space20{clear:both;height:20px}.basic_w25{display:inline-block;width:35%}.basic_w75{display:inline-block;width:65%;clear:right}.basic_blank{border:none;border-bottom:1px dotted #353331;width:100px;font-size:22px;padding:5px}.basic_blank_r{width:95%}.stt_text,.stt_text_r{color:#eb5216}.basic_box td .stt_text{float:left;width:100%;margin-top:5px}.stt_text{display:inline-block;margin-right:10px}.stt_text_r{margin:10px auto}.basic_word{width:96%;font-weight:700;float:left;border:1px solid #aeaeae;color:#5e1534;margin:10px auto;padding:15px 2%}.basic_trans{color:#ea4d00;font-style:inherit;font-weight:400}.basic_blank_part{height:30px;text-align:center;font-size:22px;border-radius: 4px;color:#000;border: 1px solid #000;font-family:Arial,Helvetica,sans-serif;vertical-align:middle;padding:0 5px}.basic_content_bl{width:100%;display:inline-block;text-align:left}.basic_text_check{display:inline-block;vertical-align:middle}.basic_blank_part input{color:#6d0500}.basic_box_blank_part{line-height:40px}.basic_box_blank{display:inline-block;width:85%;text-align:justify}.basic_blank_row .stt_text{float:left;width:100%;margin-top:15px}.input_letter{width:20px;border:none;border-bottom:1px solid #ccc;color:#ca11a0;font-size:24px;text-align:center}.blank_w{width:10px;border:none;border-bottom:1px solid #1181b2;text-transform:uppercase;color:#ec1349;font-weight:700;margin:0 1px}.basic_select{margin:10px 5%;font-size:20px}.basic_mark_word{display:inline-block;width:93%;padding:2px 10px}.basic_mark_item{float:left;width:50%;margin:10px auto}.basic_mark_cent{background:0 0;float:left}.basic_mark_mc{margin-left:10px;margin-top:7px;float:right;color:#e800e8}.basic_text_ans{float:right;color:#0053a6;margin:0 10px}.basic_mark_word .basic_text_ans{text-decoration:line-through}.word_key{float:left;background:#589214;font-weight:700;color:#fff;font-size:16px;width:120px;text-align:center;border-radius:4px 4px 0 0;padding:5px 10px}.basic_mark_word_key{line-height:45px;border-top:2px solid #589214}.choice_word_question{background:#f5f5f5;display:inline-block;padding:2px 10px}.basic_sentence_reorganizing{width:100%;display:block;position:relative}.basic_sentence_item{display:inline-block;margin:15px 5px 0;position:relative}.basic_drop_drag{width:95%;display:inline-block}.basic_drag{float:left;line-height:28px;display:inline-block;margin-bottom:0;text-align:center;white-space:nowrap;vertical-align:middle;border:1px solid transparent;border-radius:4px;box-shadow:1px 1px 1px #888;padding:2px 10px}.basic_drag_static{color:#b2b2b2;position:relative}.basic_drag_re{position:absolute;background-color:rgba(131,181,185,.37);border-bottom:1px solid #90b7bf;cursor:all-scroll;z-index:10;left:0}.basic_sentence_re_drop{display:inline-block;width:100%;margin-top:20px}.basic_drop_re{border:1px dashed #b2b2b2;color:#333;font-weight:700;text-align:center;height:30px;display:inline;float:left;min-width:70px;margin:0 7px 10px}.drag-hover{border:1px solid #f90}.basic_cent_ans{color:#004080;font-style:normal;float:left;margin:20px 20px 0 35px}.basic_drop_re .basic_drag{margin-top:0;background:0 0;color:#000;border:none;box-shadow:none}.basic_reor_text_tf .basic_drag{font-weight:700}.basic_reor_text_t .basic_drag{color:#58960f}.basic_reor_text_f .basic_drag{color:red}.drag_reor_clicked{background:#0f8abb;border-bottom:2px solid #116282}.basic_word_drop_bl{padding-bottom:20px;width:100%;margin-bottom:35px;font-size:20px;text-align:center}.basic_dpbl_drag{float:left;text-align:center;font-weight:700;line-height:28px;padding:0 10px}.basic_dpbl_drag_static{color:#b2b2b2;position:relative;-moz-border-radius:3px;-webkit-border-radius:3px;border-radius:3px}.basic_dpbl_drag_re{position:absolute;color:#362424;cursor:pointer;z-index:10}.basic_drop_bl_item{border:1px dashed #b2b2b2;color:#333;font-weight:700;text-align:center;height:36px;margin:10px 5px;display:inline-block;padding:3px 15px}.basic_hoi_gray1{color:#ccc}.droped_br_bl{float:none}.basic_droped_bl{padding:0 5px}.basic_drop_bl_hover{border:1px dashed #ff5b0d}.basic_item_drop_bank{display:inline-block;margin-right:15px;margin-top:20px;border:1px dashed #b2b2b2;position:relative}.basic_item_drop_bank .basic_dpbl_drag_re{position:absolute;top:0;left:0}.basic_drop_blank_content{float:left;width:100%;line-height:50px;margin-left:2vw}.drag_bl_clicked{background:#ffd5bf}.basic_drop_blank{width:96%}.drop_group_sentence .uba_audioButton{float:left}.drop_group_sentence .basic_item_drop_bank{border:none;margin:0}.drop_group_sentence .basic_item_drop_bank .basic_dpbl_drag{padding:5px}.basic_table_group{border-collapse:collapse;width:100%}.basic_tr_first{background:#4b7d1c;color:#fff}.basic_table_group td{border:1px solid #ccc;padding-left:15px}.drop_group_item{height:200px!important;line-height:28px;resize:vertical;vertical-align:top;width:95%;padding:10px}.drop_group_sentence .drop_group_item{height:100px!important}.drop_group_item_hover{background:#fff4f4}.drop_group_item .basic_dpbl_drag_re{line-height:27px;border:1px solid #538e0d;margin-right:20px;margin-top:20px;background:#eae5de;border-radius:4px;position:static!important;padding:0 10px}.drop_group_ans{color:#0078f0;font-weight:700;line-height:27px;float:left;margin:15px}.bs_group_2{width:50%}.bs_group_3{width:33%}.bs_group_5{width:20%}.bs_group_4{width:25%}.gr_word_clicked{background:#ffd5bf!important}.basic_checkbox_item{width:100%;float:left;padding:10px 0}.basic_ck_item_ic{margin-right: 10px;width:20px;height:20px;border-radius:4px;border:1px solid #b2aca5;display:inline-block;cursor:pointer;margin-right:20px}.basic_ck_item_ic_ck{background-position:-239px -292px}.basic_chk_check{float:left;margin-right:5px;height:12px;width:18px;margin-top:6px}.basic_ck_item_text{padding-left:10px;line-height:22px;display:inline-block;text-align:justify;cursor:pointer}.basic_ck_item_text img{margin-top:10px}.basic_col4 .basic_ck_item_text{width:70%}.basic_box_seq{display:inline-block;margin:10px;position:relative;width:100%}.basic_ck_item{margin-bottom:15px}.selectedText,.selectedText_p{color:red;text-decoration:line-through;padding:4px 6px;}.selectedText_p .icon-bt{width:18px;margin-left:5px;height: 18px;display: inline-block;vertical-align: middle;}.selectedText_p{text-decoration:none;background-color:#f9f62b}.basic_mistake_p.underline .mistake_item,.basic_mistake_p.underline .selectedText_p{text-decoration:underline}.selectedText.mistake_item{border-bottom:none}.m_qzmatch_numl{width:25px;height:25px;line-height:25px;border-radius:28px;text-align:center;color:#fff;float:left;position:relative;top:-10px;left:0;background:#333;font-weight:700}.m_qzmatch_numr{display:none;width:25px;height:25px;line-height:25px;border-radius:28px;text-align:center;color:#fff;float:right;position:relative;top:-10px;right:-10px;background:#333;font-weight:700}.m_qzmatch_num_red{background:red;display:block}.m_qzmatch_num_green{background:green;display:block}.m_qzmatching_bitem,.m_qzmatching_bitem_cl,.m_qzmatching_titem,.m_qzmatching_titem_cl{background-image:url(../images/mobile_matching1.png);background-repeat:repeat-x;margin-bottom:20px;width:100%;height:auto;font-family:Arial,Helvetica,sans-serif;font-weight:700;font-size:22px;color:#434343}.m_qzmatching_titem{background-position:0 74px;padding-bottom:7px}.m_qzmatching_titem .m_qzmatching_titem_ct{height:auto;background-color:#f2d779;border-top-left-radius:5px;border-top-right-radius:5px;text-align:center;border-color:#dfbb3b;border-style:solid;border-width:1px 1px 0;padding:8px 10px}.m_qzmatching_titem_cl .m_qzmatching_titem_ct{background-color:#ebc14d;border-color:#cd9920}.m_qzmatching_bitem{padding-top:10px;background-position:0 -27px}.m_qzmatch_bnumr{width:25px;height:25px;line-height:25px;border-radius:28px;text-align:center;color:#fff;float:left;position:relative;top:21px;font-weight:700}.m_qzmatching_bitem .m_qzmatching_bitem_ct{height:auto;background-color:#a9dcd9;border-bottom-left-radius:5px;border-bottom-right-radius:5px;text-align:center;border-color:#a9dcd9 #66c8c2 #66c8c2;border-style:solid;border-width:1px;padding:8px 10px}.m_qzmatching_bitem_cl{background-position:0 -42px}.m_qzmatching_titem_cl{background-position:0 58px}.m_qzmatching_bitem_cl .m_qzmatching_bitem_ct{background-color:#5fb4af;color:#fff;border-color:#5fb4af #258c82 #258c82}.tanc_matching .tanc_number{clear:both;margin-bottom:20px;float:none}.basic_mt_index{float:left;width:20%;max-width:25px;height:25px;line-height:25px;font-size:18px;text-align:center;color:#fff;background:#50ab1f;border-radius:13px}.stt_mat_center{vertical-align:middle;display:table-cell;line-height:20px}.mqz_cor{color:#51a007}.basic_box_seq{position:relative;display:inline-block;width:100%;margin-top:10px}.basic_box_seq .qz_correct_cil{right:-32px}.basic_sequence_drop{width:80vw;display:table-cell;position:absolute;border-radius:3px 3px 3px 3px;box-shadow:1px 1px 3px #c5c5c5 inset;float:left;left:30px;padding:0 10px}.basic_sequence_drag{width:80vw;display:table-cell;position:absolute!important;z-index:10;border:1px solid #f2d779;cursor:all-scroll;border-radius:4px;float:left;background:#f5edd1;margin-bottom:20px;box-shadow:2px 2px 3px silver;left:30px;font-size:18px;padding:0 10px}.basic_sequence_drag_h{background:#cc730a;color:#fff}.basic_sq_index{position:absolute;left:0}.basic_sq_index_r{right:0;left:auto;display:none}.basic_seq_clicked{border:1px solid #ff9000;color:#fff;background:#cc730a}.space5{clear:both;height:1px;width:100%}.active,.basic_active{display:block;height:auto}.basic_center,.box_bt_ctrl,.text_center{text-align:center}.basic_text_alert,.basic_weight,.text_weight{font-weight:700}.basic_hidden,.qz_sort_inx{display:none}#load_file_js,.basic_content p,.mqz_mat_drop{clear:both}.basic_blank_row.basic_col2,.bs_part_show{margin-top:15px}.basic_col3 .basic_ck_item_text,.item_radio_vd{width:75%}.basic_tr_first td,.tr_first td{color:#fff!important;font-weight:700;text-align:center;border:1px solid #fff}.fbuser_score,.mark_r_on,.mqz_incor,.text_red{color:red}.basic_content_mistake,.basic_mistake_p,.choice_word_question strong{cursor:pointer}.drop_bl_clicked,.drop_reor_clicked{border:1px dashed #e84b00}.m_qzmatch_bitem_left,.m_qzmatch_titem_left{width:5%;float:left;height:56px}.basic_italic,.text_italic{font-style:italic}.box_style2{border:none;border-radius:50px;text-align:justify;line-height:196%;background:#fde9d9;margin:10px auto 20px;padding:15px}.text_note{color:#13839e;font-style:italic}.icon_p{padding-left:20px;background-position:-130px -584px;margin:5px -20px;width:100%}.title2{color:#bf6136;font-weight:700;margin-top:10px;display:inline-block;border-bottom:1px solid #ccc;line-height:30px;padding-bottom:5px}.img_100{width:100%}.instruction_ex{color:#1a4771;text-align:center;display:inline-block;margin:10px 5%;font-size:16px;line-height:21px}.m_left img{max-width:150px;width:100%}.mobile_table .mobile_tr{border-bottom:1px solid #d9aa74;margin:0;padding:20px 0;width:100%;float:left}.mobile_table .mobile_td{width:250px;text-align:left;margin-left:10px}.qz_incorrect_cil{background:red}.bs_grou_first{background:#4b7d1c;color:#fff;font-weight:700;text-align:center;width:30%}.basic_index{background-color:#ee7600;color:#fff;font-size:20px;width:88px;-webkit-border-radius:2px;-moz-border-radius:2px;border-radius:2px;z-index:2;vertical-align:top;height:34px;display:inline-block;line-height:34px;text-align:center;position:relative}.basic_index:after{border:solid transparent;content:" ";height:0;width:0;position:absolute;pointer-events:none;border-color:rgba(136,183,213,0);border-left-color:#ee7600;border-width:17px;margin-top:-17px;left:87px;top:17px}.basic_point{background-color:#f5f5f5;font-size:18px;color:#9d9d9d;left:-5px;padding-left:25px;vertical-align:top;padding-right:15px;vertical-align:top;height:34px;display:inline-block;line-height:34px;text-align:center;position:relative}#basic_main{counter-reset:section}.basic_index:before{counter-increment:section;content:"Câu "counter(section)}.box_inp_dau{position:relative}.box_inp_dau .inp_dau{left:38%;position:absolute;top:-75%}.box_inp_dau .inp_dau.under{top:25px}.false_ques{color:#d55;font-size:16px;line-height:30px;margin-left:10px}.true_ques{color:#71bb5a;font-size:16px;line-height:30px;margin-left:10px}.bt_html_help{color:#2c2c2c;font-size:16px;margin:0 auto;width:95%}.bt_tit_true_answer{background:url(https://www.luyenthi123.com/file/common/baitap/image/line-border.png) repeat-x scroll center top,rgba(0,0,0,0) url(https://www.luyenthi123.com/file/common/baitap/image/line-border.png) repeat-x scroll center bottom;color:#ec5c51;font-size:18px;margin-top:35px;padding-bottom:30px;padding-top:20px;text-align:center}.bt_true_answer{color:#000;font-size:20px;padding-top:15px}.bt_box_help{color:#000;display:none;font-size:16px;margin:0 auto;padding:20px;text-align:center;width:75%}.bt_box_help h1,.bt_box_video h1{color:#ff3b7b;padding-bottom:15px;text-align:center;text-transform:uppercase}.basic_content_mistake .mistake_item,.basic_mistake_p .mistake_item{color:green;text-decoration:line-through}.basic_mistake_p.underline .mistake_item,.basic_mistake_p.underline .selectedText_p{text-decoration:underline}.MJX_Assistive_MathML{display:none}.check_ques_false{background-color:#d55;color:#fff;display:inline-block;font-size:18px;line-height:34px;margin-left:10px;min-width:35px;padding:0 10px;text-align:center}.check_ques_true{background-color:#71bb5a;border-radius:20px;color:#fff;display:inline-block;font-size:18px;line-height:35px;margin-left:10px;min-width:35px;padding:0 10px;text-align:center}.basic_ques_matching{display:inline-block;margin:10px 50px;width:740px}._help_goi_y,._help_luu_y{background-color:#fff0cc;color:#b86a1d;font-family:"Times New Roman",Times,serif;font-size:18px;font-style:italic;margin:30px auto;padding:16px 10px 16px 70px;position:relative}.icon-owl{float:left;top:-45px;position:absolute;left:-2px;width:66px;height:115px;background-position:-10px -292px}.show_hint{height:30px;margin:0 auto;text-indent:10px;display:table;padding:10px 0;cursor:pointer;color:#348dc1;font-size:18px}.show_hint span{display:inline-block;vertical-align:middle}.show_hint .icon-hint{cursor:pointer;margin-top:2px;background-position:-434px -184px;width:24px;height:24px}.basic_pink{color:#ff3b7b;font-weight:700}.basic_green{color:#498601;font-weight:700}.basic_gray{color:#787878;font-size:18px}.basic_italic{font-style:italic}.qz_pop_layout{height:380px;margin-top:30px;text-align:center}.qz_pop_layout a{color:#d55}.qz_ahref{background-color:#06ba89;color:#fff!important;display:block;margin:50px auto 0;width:200px;padding:8px 20px}.mq-hold{display:inline-block;position:relative;font-size:22px}.mq-toolbar .mq-btn{display:inline-block;height:32px;margin:0}.mq-btn{border-right:1px solid #9a9a9a;display:inline-block;height:32px}.mq-btn:last-child{border-right:none!important}.ic_loading{margin:20px auto}.cmd:hover{background:#fc9900 linear-gradient(to bottom,#fffded,#ffe061) repeat scroll 0 0;cursor:pointer}.mq-btn:active{box-shadow:0 0 6px rgba(0,0,0,.5) inset}.mq-toolbar::before{border-bottom:8px solid rgba(0,0,0,.4);border-left:8px solid transparent;border-right:8px solid transparent;content:"";display:inline-block;left:14px;position:absolute;top:-8px}.mq-toolbar::after{border-bottom:7px solid #fff;border-left:7px solid transparent;border-right:7px solid transparent;content:"";display:inline-block;left:15px;position:absolute;top:-7px}.mq-toolbar{background:#fff none repeat scroll 0 0;border:1px solid #ccc;border-radius:6px;box-shadow:0 2px 6px #ccc;display:inline-block;line-height:0;position:relative}.basic_hoi_black{background-color:#3b3c3e;border:medium none;border-radius:4px;color:#fff;display:inline-block;font-size:25px;text-align:center;width:45px}.mq-hold:focus .mq-tool{display:block}.mq-tool{bottom:-46px;height:38px;left:0;position:absolute;width:200px;text-align:left}.mathquill-editable .latex-command-input.hasCursor{border-color:activeborder}.mathquill-editable.empty::after,.mathquill-rendered-math .empty::after,.mathquill-textbox::after{content:"c";visibility:hidden}.mathquill-editable .cursor:only-child::after,.mathquill-editable .textarea+.cursor:last-child::after{content:"c";visibility:hidden}.mathquill-textbox{overflow-x:auto;overflow-y:hidden}.line_gray{stroke:#cfcfcf;stroke-width:1}.line_bold{stroke:#000;stroke-width:1.8}.line_bolder{stroke:#000;stroke-width:2}.map-container{position:relative;width:480px;height:430px;margin:20px auto}.map-container.tiaso{height:80px!important}.map-svg{position:absolute;left:0;top:0}.map-catcher{position:absolute;left:0;top:0;height:100%;width:100%}.basic_q_title{color:#000;display:block;font-size:18px;height:auto;line-height:30px;margin:0 auto;text-align:center;width:90%;padding-top:20px;overflow-x: auto;}.bkt .basic_q_title{margin-top:15px}.basic_q_title img{margin-bottom:16px}.basic_radio{background-color:#348dc1;border-radius:7px;color:#fff;cursor:pointer;display:block;font-size:18px;margin:15px 0;padding:18px 10px;text-align:left;vertical-align:top}.basic_radio.item_choice{background-color:#ff3b7b!important}.item_radio{color:#fff;cursor:pointer;line-height:1.5}.box_bt_ctrl{padding-bottom:50px}.box_bt_ctrl .show{display:inline-block!important}.bt_show_hd{display:none;position:relative;margin:0 auto 16px;cursor:pointer;background:#63c9ca}.bt_show_hd::after{background-position:-330px -182px;content:"";width:36px;height:36px;display:inline-block;position:absolute;z-index:8;left:7px;top:5px}.bt_html_help{width:95%;margin:0 auto;font-size:16px;color:#2c2c2c;line-height:190%}.bt_tit_true_answer{color:#ec5c51;text-align:center;font-size:18px;padding-top:20px;padding-bottom:20px;background:url(../images/line-border.png) top center repeat-x,url(../images/line-border.png) bottom center repeat-x;margin-top:35px}.bt_true_answer{font-size:20px;color:#000}.bt_box_help{margin:0 auto;text-align:center;font-size:16px;color:#000;display:none}.bt_box_help h1,.bt_box_video h1{color:#ff3b7b;text-transform:uppercase;text-align:center;font-size:5vw}.bt_box_help img{padding-top:15px}.bt_ques_img{min-height:220px}._tit_hoi{display:inline-block;width:55px;height:30px;background-color:#3b3c3e;color:#fff;border-radius:4px;-webkit-border-radius:4px;-moz-border-radius:4px;font-size:28px;text-align:center;border:none}.bt_ques_instruc_sl{line-height:6vw;font-size:6vw;color:#000;width:90%;margin:0 auto;text-align:center;height:auto;padding:2vw 0;display:block;word-break:break-word}.bt_ques_instruc_sl span{line-height:28px!important}#lesson-detail-page .m-ldp-info{padding:1vw 0!important;top:0;height:52px;width:100vw!important;background-color:rgba(255,255,255,.8)!important}.bkt .part{border-bottom:1px solid #ccc;padding-bottom:30px;margin-bottom:20px;position:relative}._bkt_report{right:0;height:25px;width:31px;margin-right:8px;background-position:-272px -285px;position:absolute;z-index:10px;bottom:0;display:inline-block}.basic_radio_check,.item_radio .item_radio_click{margin-right:5px;display:inline-block;margin-bottom:5px}._kt .timer_ques_kt{background-color:ivory;border-radius:0 10px 10px 0;box-shadow:1px 1px 5px 0 #999;display:inline-block}.bg_btclass_right._kt{top:55px;z-index:99;left:0!important;position:fixed}.timer_ques_kt ._time{background-color:#fff981;color:#ee7600;display:inline-block;padding:10px;margin-left:10px;font-size:22px}.timer_ques_kt span{text-align:center;width:100%;display:inline-block}.timer_ques_kt ._top{font-family:Tahoma,Geneva,sans-serif;font-size:5vw;width:40vw;display:inline-block}.timer_ques_kt ._time{background-color:#fff981;line-height:6vw;color:#ee7600;font-size:6vw;padding:2vw;border-radius:5vw;display:inline-block;width:22vw}.num_hde{position:absolute;top:0;left:0}#result{width:100%;height:auto;margin:0 auto;position:relative;z-index:1;display:none;background-image:linear-gradient(to bottom,#51b6d7,#eff7fa);background-color:#53c9f552}#frame_finish{background-repeat:no-repeat;background-image:url(https://www.luyenthi123.com/file/common/baitap/image/m-q-fr-score-bg.png);width:100%;height:364px;margin:auto;opacity:0;background-position:center top}#result_info{position:relative;top:-110px}#total_score{border-radius:50%;color:#fff200;font-size:66px;font-weight:700;height:66px;line-height:66px;position:relative;text-align:center;width:50vw;left:24vw;top:60px}#chestnuts{text-align:center;margin-bottom:15px}.chestnut{display:inline-block;position:relative;vertical-align:middle}#number_chestnuts{font-family:"Skranji Bold";color:#fff;font-size:108px;left:41%;-webkit-text-stroke:2px #442204;-moz-text-stroke:2px #442204;opacity:.7}.chestnut_i{background-position:-10px -184px;width:88px;height:88px}.chestnut_i.chestnut_i_static{background-position:-118px -184px}#point_other{line-height: 1.5;}#point_other_left{display:inline-block;margin:0 0 0 10%;text-align:left}#point_other_right{display:inline-block;text-align:center;margin-left:10%}.rs_point{font-size:20px;margin:0;opacity:0;display:list-item;margin:15px 0}.rs_point_name{color:#583b1e}.point_plus{color:#d55}.point_plus span{display:inline-block;vertical-align:middle}#point_total_achie{text-align:center;margin-bottom:0;margin-top:10px}.point_total_achie{width:100%;line-height:56px;font-family:Arial;font-size:20px;background-color:#ffbb51}.point_total_achie span{padding-left:10px;vertical-align:middle;display:inline-block}.icon-chest-total{background-position:-96px -292px;width:40px;height:43px}.icon-tt-total{width:49px;height:42px;background-position:-209px -184px}._rsp,.pta_old{font-family:"Skranji Bold";color:#fff;font-size:30px;font-weight:700;text-shadow:1px 1px 1px #442204,1px 1px 1px #442204,2px -1px 1px #442204,1px 1px 1px #442204,1px 1px 1px #442204;letter-spacing:2px;width:100%;margin-top:1vw}.pta_icon{transform:scale(.4)}#point_achievement{background-color:#00e4ff}._rsp{color:#fff200;width:35px;text-align:left;font-size:35px}._rsp_f{opacity:0}span.pta_name{margin:0}span.pta_icon{margin:0 2vw 0 -3vw;width:6vw}#rsbuttons{position:relative;text-align:center}.rsbutton{display:inline-block;margin:0 6px;position:relative;top:100%;cursor:pointer}#bt_review{background-position:-263px -10px;width:210px;height:66px}#bt_lesson_other{background-position:-10px -97px;width:216px;height:67px}#bt_lesson_menu{background-position:-10px -10px;width:223px;height:67px}.button_name{margin:0 0 0 55px;border-radius:5px;color:#fff;display:inline-block;font-size:17px;height:66px;line-height:66px;padding:0 10px}.box_show_huyhieu{display:none;background-color:#8f5723;bottom:238px;height:400px;left:0;position:absolute;top:-205px;width:100%;overflow:hidden;z-index:9999}#point_10_total{position:absolute;bottom:30px;text-align:center;width:100%;color:#fff;font-size:22px}#ach3{top:120px;left:30%}#ach2{top:-104px;left:0;-webkit-animation-name:spin;-webkit-animation-duration:10s;-webkit-animation-iteration-count:infinite;-webkit-animation-timing-function:linear;-moz-animation-name:spin;-moz-animation-duration:10s;-moz-animation-iteration-count:infinite;-moz-animation-timing-function:linear;-ms-animation-name:spin;-ms-animation-duration:10s;-ms-animation-iteration-count:infinite;-ms-animation-timing-function:linear;animation-name:spin;animation-duration:10s;animation-iteration-count:infinite;animation-timing-function:linear}@-ms-keyframes spin{from{-ms-transform:rotate(0)}to{-ms-transform:rotate(360deg)}}@-moz-keyframes spin{from{-moz-transform:rotate(0)}to{-moz-transform:rotate(360deg)}}@-webkit-keyframes spin{from{-webkit-transform:rotate(0)}to{-webkit-transform:rotate(360deg)}}@keyframes spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}.basic_explain h1{color:#ff3b7b;text-transform:uppercase;text-align:center;font-size:20px}img{max-width:90vw}.box_inp_dau .inp_dau.nga{top:-85%}.box_inp_dau .inp_dau.nang{top:45%}.basic_table_left{display:inline-block;text-align:justify!important}.basic_table_center{display:inline-block;font-size:17px}.textindent{text-indent:24px}.tv .basic_q_title{font-size:22px;line-height:28px}.tv .basic_q_title.dr_content{font-size:26px;line-height:50px}.tv.box_basic_content{font-size:20px}.tv .basic_segment .part .title{font-size:22px}.tv .basic_size18{font-size:18px}.drag_reor_clicked{background:#0f8abb;border-bottom:2px solid #116282}.drop_bl_clicked,.drop_reor_clicked{border:1px dashed #e84b00}@-moz-keyframes drop_bl_clicked{0%{border:1px dashed #e84b00}50%{border:1px dashed #ccc}100%{border:1px dashed #e84b00}}@-webkit-keyframes drop_bl_clicked{0%{border:1px dashed #e84b00}50%{border:1px dashed #ccc}100%{border:1px dashed #e84b00}}@-ms-keyframes drop_bl_clicked{0%{border:1px dashed #e84b00}50%{border:1px dashed #ccc}100%{border:1px dashed #e84b00}}@keyframes drop_bl_clicked{0%{border:1px dashed #e84b00}50%{border:1px dashed #ccc}100%{border:1px dashed #e84b00}}.drop_bl_clicked{-moz-animation:drop_bl_clicked normal 2s infinite ease-in-out;-webkit-animation:drop_bl_clicked normal 2s infinite ease-in-out;-ms-animation:drop_bl_clicked normal 2s infinite ease-in-out;animation:drop_bl_clicked normal 2s infinite ease-in-out}.basic_word_drop_ms{display:none;width:90%;margin-left:7%;padding-bottom:20px;text-align:center}.basic_dpms_drag{float:left;text-align:center;font-weight:700;line-height:28px;padding:0 10px}.basic_dpms_drag_static{color:#b2b2b2;position:relative;-moz-border-radius:3px;-webkit-border-radius:3px;border-radius:3px}.basic_dpms_drag_re{position:absolute;color:#362424;cursor:all-scroll;z-index:10;left:0}.basic_drop_ms_item{border:1px dashed #b2b2b2;color:#333;font-weight:700;text-align:center;height:22px;display:inline;margin:0 7px -5px;padding:3px 25px}.droped_br_ms{float:none}.basic_droped_ms{padding:0 5px}.basic_drop_ms_hover{border:1px dashed #ff5b0d}.basic_item_drop_ms{display:inline-block;margin-right:15px;margin-top:20px;border:1px dashed #b2b2b2;position:relative}.basic_drop_ms_content{display:inline-block;width:98%;margin-top:30px;line-height:50px;margin-left:20px}.drop_ms_clicked{border:1px dashed #e84b00;text-decoration:none}.drag_ms_clicked{background:#ffd5bf}.hint_drop_ms_ex{color:#d55;text-align:center;line-height:20px;width:90%;display:inline-block;margin:0 5% 0;font-size:15px}.basic_content_mistake_select .mistake_item{color:green;text-decoration:underline}table .basic_select{display:table-row}.basic_dpgw_drag{float:left;text-align:center;font-weight:700;line-height:28px;padding:0 10px}.basic_dpgw_drag_re{position:absolute;color:#362424;cursor:all-scroll;z-index:10;left:0}.basic_drop_gw_item{border:1px dashed #b2b2b2;color:#333;font-weight:700;text-align:center;height:22px;display:inline;margin:0 7px -5px;padding:3px 10px}.basic_item_word_group{display:inline-block;margin-right:15px;margin-top:20px;border:1px dashed #b2b2b2;position:relative}.basic_word_group_content{display:inline-block;width:98%;margin-top:30px;line-height:50px;margin-left:20px}.drop_gw_clicked{border:1px dashed #e84b00}.drag_gw_clicked{background:#ffd5bf}.drop_group_item .basic_dpgw_drag_re{position:relative!important;line-height:27px;border:1px solid #538e0d;margin-right:20px;margin-top:20px;background:#eae5de;border-radius:4px;padding:0 10px}.basic_dpgw_drag_static{color:#b2b2b2;position:relative;-moz-border-radius:3px;-webkit-border-radius:3px;border-radius:3px}.basic_hoi_gray{background-color:#b1b1b1;color:#fff;display:inline-block;font-size:26px;line-height:31px;text-align:center;width:45px}.basic_content_long_ques{overflow:hidden;height:220px}.basic_q_title .basic_q_view_more{position:absolute;height:180px;width:95%;top:40%}.basic_q_view_more .btn_show_full_content{margin-top:40%;margin-left:25%;width:150px;background-color:#8b8b8b;color:#fff;text-align:center;padding:5px 0;cursor:pointer;font-size:18px}.basic_content_long_ques .btn_hide_content{width:150px;background-color:#8b8b8b;color:#fff;text-align:center;padding:5px 0;margin:20px auto;cursor:pointer;clear:both}#switch_audio{background-position:-299px -96px;background-color:#fff;width:38px;height:35px;margin-left:7px;vertical-align:middle;border:none;cursor:pointer;display:inline-block}#switch_audio.muted{background-position:-263px -96px}.icon-warning{width:23px;height:21px;display:inline-block;background-position:-156px -292px}#lesson-detail-page .m-ldp-info .m-ldpi-err{padding:2vw 2vw 2vw 0!important}.basic_gr_checkbox .basic_elm{margin:20px}.basic_gr_checkbox .basic_ck_item_gr{display:inline-block;min-width:160px!important;margin-bottom:10px;font-style:normal!important}.basic_gr_checkbox .title_ques{font-weight:700;margin:15px 0;font-style:normal!important}.basic_gr_checkbox .title_ques i{font-style:normal!important}#lesson-detail-page .m-ldp-info .m-ldpi-err img{width:23px!important}#lesson-detail-page .m-ldp-info .m-ldpi-err{font-size:18px}.m-ldpi-left #container{display:none}.true_false {display: block;width: 30px;height: 30px;border: 1px solid #615959;border-radius: 20px;padding: 0;}.true_false.r_on{background: #FF9800;}
.basic_segment.active{position:relative}.div-cover{position:absolute; top:0; right:0px; left:0px; z-index:10; width:100%; height:100%;}.frac123{display: inline-block; vertical-align: middle;margin-left:10px}.frac123 .ts{border-bottom:1px solid #000;padding-bottom: 2px;padding: 5px 10px; margin-bottom: 2px}