.fl[data-v-77f4648d]{float:left}.fr[data-v-77f4648d]{float:right}.text_center[data-v-77f4648d]{text-align:center}.text_left[data-v-77f4648d]{text-align:left}.text_right[data-v-77f4648d]{text-align:right}.text_overflow2[data-v-77f4648d]{text-overflow:-o-ellipsis-lastline;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical}.no_write_module_placeholder[data-v-77f4648d]{font-size:50px;text-align:center;margin-top:50px}.clearfix[data-v-77f4648d]:after,.clearfix[data-v-77f4648d]:before{content:" ";display:table}.clearfix[data-v-77f4648d]:after{clear:both}.clearfix[data-v-77f4648d]{*zoom:1}.text_overflow[data-v-77f4648d]{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.red_color_font[data-v-77f4648d]{color:#fa541c}.main_color_font[data-v-77f4648d]{color:#26bf80}.white_color_font[data-v-77f4648d]{color:#fff}.grey_color_font[data-v-77f4648d]{color:#8c8c8c}.orange_color_font[data-v-77f4648d]{color:#faad14}.dander_color[data-v-77f4648d]{color:#ff2a00}.small_size[data-v-77f4648d]{font-size:12px}.middle_size[data-v-77f4648d]{font-size:14px}.width_150[data-v-77f4648d]{width:150px}.ml_10[data-v-77f4648d]{margin-left:10px}.mr_10[data-v-77f4648d]{margin-right:10px}.font_weight[data-v-77f4648d]{font-weight:700}.pointer[data-v-77f4648d]{cursor:pointer}.delete_btn:hover span[data-v-77f4648d]{color:#fa541c!important}.module_view_explain_video_card[data-v-77f4648d]{position:relative;width:100%;height:120px;border:1px solid #e8e8e8}.module_view_explain_video_card.active[data-v-77f4648d]{border-color:#26bf80}.module_view_explain_video_card.error[data-v-77f4648d]{border-color:#ff727f}.module_view_explain_video_card img[data-v-77f4648d]{width:100%;height:100%}.module_view_explain_video_card .delete[data-v-77f4648d]{position:absolute;z-index:1;top:5px;right:5px;cursor:pointer;display:inline-block;height:20px;width:20px;background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA80lEQVQ4jZ3TMUoDQRSA4S/jYuEZYuGCIKbwDmIRUfASEbHMRbSyCMY7xEKwCN5BCJaieIYoLCRYzGxYA2uy+bsZ5n/vzcx7remobYlD9HCKvbT3jmcM8VY93KoE2MYNrhGWoybmuEcfP5BV5Cec1IglAVfYTxUWZabbNeQqx6laremo3cErthoEgBmOgvhgTWXJ6QV0N5BLuhny6s7Oxde/xvfjbnWZ133XuhSZ2CQHNRlW8RnEDtuUccCD+CVNmWEYMMFggwADTMpH7GPcQH5JzmJoCpzhThyYOuYp83ly/kxjSQeXYoPl6eBHqnAoXnnBL7PXM57V40pNAAAAAElFTkSuQmCC) no-repeat;background-position-y:1px}.module_view_explain_video_card .video_title[data-v-77f4648d]{position:absolute;left:0;bottom:0;height:30px;line-height:30px;width:100%;color:#fff;background-color:rgba(0,0,0,.7);font-size:12px;padding:0 8px}.module_view_explain_video_card .video_title span[data-v-77f4648d]{display:inline-block;width:68%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.module_view_explain_video_card .video_title i[data-v-77f4648d]{float:right;width:30%;text-align:right;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.module_view_explain_video_card .mask[data-v-77f4648d]{position:absolute;width:100%;height:100%;bottom:0;left:0;background-color:rgba(0,0,0,.6)}.module_add_explain_dialog .el-dialog__headerbtn .el-dialog__close{font-size:20px}.module_add_explain_dialog .el-dialog__footer{display:none}.module_add_explain_dialog .explain_dialog_footer{height:50px;line-height:50px;background-color:#f1f8fe;text-align:center}.module_add_explain_dialog .explain_dialog_footer .add_file_btn{margin-right:20px}.module_add_explain_dialog .dialog_title{font-weight:bolder;font-size:18px}.module_add_explain_dialog .el-dialog__body{padding:0}.module_add_explain_dialog .explain_dialog_content{min-height:200px}.module_add_explain_dialog .hint_tip{font-size:12px;color:#595959}.module_add_explain_dialog .add_control{font-size:14px;height:30px;line-height:30px;margin-bottom:20px;padding:10px 20px 0}.module_add_explain_dialog .add_control:after{display:block;content:".";height:0;line-height:0;clear:both;visibility:hidden}.module_add_explain_dialog .add_control .add_hint{float:left;width:420px;line-height:30px}.module_add_explain_dialog .add_control .add_hint i{color:#26bf80;text-decoration:underline;cursor:pointer}.module_add_explain_dialog .add_control .switch_btns{float:right}.module_add_explain_dialog .add_control .switch_btns .switch_text{margin-right:8px;font-size:12px}.module_add_explain_dialog .add_control .switch_btns .card,.module_add_explain_dialog .add_control .switch_btns .table{display:inline-block;width:25px;height:25px;text-align:center;border:1px solid #e8e8e8;vertical-align:middle;cursor:pointer}.module_add_explain_dialog .add_control .switch_btns .card i,.module_add_explain_dialog .add_control .switch_btns .table i{display:inline-block;height:14px;width:14px;margin-top:6px;margin-left:3px}.module_add_explain_dialog .add_control .switch_btns .card.active{background-color:#26bf80}.module_add_explain_dialog .add_control .switch_btns .card.active i{background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAYAAABWdVznAAABFUlEQVQokU3RwUqVURTF8d93uRgW4UwnToSIBCEHNhYJNMUn6AGCKPABGvsCEThz6CBqLiJCDUR8Agc6ylFZF81E7F6XA/eF78CGdf5r7302+zRJXuItbt2fHt5hgI+YKN7BZpNkF9+xU8YG1vAHW3hTfBHzXZxhFwdlHGCk4rDFO5juYKyeH54HldzFwxYfYKxJso55nJYxg1e4xDccIZjEfpMEnuBxFZzgovQjPC39F8fdupzhuvQwGf7hV+lLNecHLOFnGVNYwVUt40fxcexJspNkIYmKrSTLSV4k+driC0m2O/iNfmuMC9zUVs5bvI9e1/1PzrVmncXnKniOZ8XnMNEkWcXr6jrs9B7/8QmjxUfw5Q7z8G9KUWhj+gAAAABJRU5ErkJggg==) no-repeat}.module_add_explain_dialog .add_control .switch_btns .table.active{background-color:#26bf80}.module_add_explain_dialog .add_control .switch_btns .table.active i{background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAALCAYAAACprHcmAAAAl0lEQVQYlZXQMY5BARhF4e8lSo1IVBOxAI1q1DahswCLsQGNZvYzdJKJQjUhJJrR4E7hKSTzDKe+/8nJXySZYYEJxnjHxT0FfuTKJokkyzygSNLDASt00Kgwn4sknqWGAfb4RBetiu351rwrm78eNdcwxHd5PcJbhfn0cnMbR2zRRN3f37jcmtdl8+K/5g/MS8MU/Qrz8RcadKLgTPyeJgAAAABJRU5ErkJggg==) no-repeat}.module_add_explain_dialog .add_control .switch_btns .card{border-right:none}.module_add_explain_dialog .add_control .switch_btns .card i{background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAYAAABWdVznAAABJUlEQVQokU3RsUvWURTG8c/744dBIm65tAgRBoIRTi0igUpzU3/AAXF0UHFoam2IIO4dHB38E0IUHUScHRps0qnXkiwdTHsbPC+8B+5wv89z7nk4t1NKeYVF/HNfF1jCHT5iLHmDjRZr2MeXFD7jJX5iBpF8DsstzrEdEYdQaz3EUJ6jAd7gWYPRHN+vB2lu8XCA32G0U0p5n6PPUpjEAv5gD1/Rw2McdHq9nlrrE4xkw7eIuMwYw3ia/HdEnDR5OUcX3b4ZIuKqz9OjU0pZxzy+p28cr3GNbZwmf4SdNvO/i4jdjLGJF/niWUS8ST6LlQY/cDuwjUvc5FZ+DfBbXLTuf3K61tpN4Tm2smGq1jqRfBpjLT7gLaZSOMYB/uIIq8mH8Ok/epdfmC7UUpoAAAAASUVORK5CYII=) no-repeat}.module_add_explain_dialog .add_control .switch_btns .table i{background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAALCAYAAACprHcmAAAArklEQVQYlZXQoUpDcRiG8d+BE1dksCQrgkmLZcsWL2Ftti9YvJP181ks9t2AeAvTO5CVwWCw4orbsZwi+h/sbQ+8PLy8VdM0z/iIiFlmPmCEg9+p8FXjHmvM8IhLhdS4wbbjO5wVzPuqbduS6K85M2+xiYhFZl5hUOjua7xigz7muDi2eYJVx1OcF7rfJ28eYhcR68zso+f/Nw41PrHEEG+4Prb5Be8dP2FcMO9+AA/mMq23kEH0AAAAAElFTkSuQmCC) no-repeat}.module_add_explain_dialog .explain_no_data{display:block;text-align:center}.module_add_explain_dialog .explain_no_data .inner{display:inline-block;background-color:#fff;width:360px;height:180px;text-align:center;cursor:pointer;overflow:hidden}.module_add_explain_dialog .explain_no_data .el-icon-upload{font-size:67px;color:#c0c4cc;margin:40px 0 16px;line-height:50px}.module_add_explain_dialog .explain_no_data .upload_text_wrapper .upload_text{color:#b3b3b3;font-size:12px;margin-bottom:10px}.module_add_explain_dialog .video_table thead th{padding:5px 0}.module_add_explain_dialog .video_table tbody td{padding:5px 0;font-size:12px}.module_add_explain_dialog .video_table .delete{cursor:pointer;display:inline-block;height:20px;width:20px;background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA80lEQVQ4jZ3TMUoDQRSA4S/jYuEZYuGCIKbwDmIRUfASEbHMRbSyCMY7xEKwCN5BCJaieIYoLCRYzGxYA2uy+bsZ5n/vzcx7remobYlD9HCKvbT3jmcM8VY93KoE2MYNrhGWoybmuEcfP5BV5Cec1IglAVfYTxUWZabbNeQqx6laremo3cErthoEgBmOgvhgTWXJ6QV0N5BLuhny6s7Oxde/xvfjbnWZ133XuhSZ2CQHNRlW8RnEDtuUccCD+CVNmWEYMMFggwADTMpH7GPcQH5JzmJoCpzhThyYOuYp83ly/kxjSQeXYoPl6eBHqnAoXnnBL7PXM57V40pNAAAAAElFTkSuQmCC) no-repeat;background-position-y:2px;vertical-align:middle;margin-left:5px}.module_add_explain_dialog .progress_wrapper{position:relative;display:inline-block;height:10px;width:140px;background-color:#ebeef5;border-radius:6px;overflow:hidden}.module_add_explain_dialog .progress_wrapper i.progress_fill{position:absolute;top:0;left:0;display:inline-block;height:100%;width:0;background-color:#26bf80}.module_add_explain_dialog i.progress_text{display:inline-block;width:40px}.module_add_explain_dialog i.progress_text.active{color:#26bf80}.module_add_explain_dialog .size_text{float:left;margin-left:20px}.module_add_explain_dialog .error_text{color:#ff727f}.module_add_explain_dialog .explain_card_list{padding:10px 20px}.use_wk_download_url{cursor:pointer;color:#26bf80}.module_video_dialog{text-align:center;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.module_video_dialog .el-dialog__footer,.module_video_dialog .el-dialog__header{display:none}.module_video_dialog .el-dialog__body{position:relative;padding:0;font-size:0}.module_video_dialog .el-dialog__body .close_btn{position:absolute;top:-20px;right:-20px;width:30px;height:30px;background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAYAAAA7MK6iAAAACXBIWXMAAAsTAAALEwEAmpwYAAAABGdBTUEAANjr9RwUqgAAACBjSFJNAABtmAAAc44AAPJxAACDbAAAg7sAANTIAAAx7AAAGbyeiMU/AAAG7ElEQVR42mJkwA8YoZjBwcGB6fPnz4w/fvxg/PnzJ2N6ejoLFxcX47Rp036B5Dk4OP7z8vL+P3DgwD+o3v9QjBUABBALHguZoJhZXV2dVUNDgxNIcwEtZnn27Nl/ZmZmQRYWFmag5c90dHQY5OXl/z98+PDn1atXv79+/foPUN9fIP4HxRgOAAggRhyWMoOwqKgoq6GhIZe3t7eYrq6uHBDb8/Pz27Gysloga/jz588FYGicPn/+/OapU6deOnXq1GdgqPwCOuA31AF/0S0HCCB0xAQNBU4FBQWB0NBQublz59oADV37Hw28ePHi74MHD/6ii3/8+HEFMGQUgQ6WEhQU5AeZBTWTCdkigABC9ylIAZeMjIxQTEyMysaNG/3+/v37AGTgr1+//s2cOfOXm5vbN6Caz8jY1NT0a29v76/v37//g6q9sHfv3khjY2M5YAgJgsyEmg0PYYAAQreUk4+PT8jd3V1l1apVgUAzfoIM2rlz5x9gHH5BtxAdA9PB1zNnzvyB+R6oLxoopgC1nBPZcoAAgiFQnLIDMb+enp5iV1eXBzDeHoI0z58//xcwIX0mZCkMg9S2trb+hFk+ffr0QCkpKVmQ2VA7QHYxAgQQzLesQMwjIiIilZWVZfPu3bstMJ+SYikyBmUzkBnA9HEMyNcCYgmQHVC7mAACCJagOEBBbGdnp7lgwYJEkIavX7/+BcY1SvAaGRl9tba2xohjMTGxL8nJyT+AWQsuxsbG9vnp06e/QWYdPHiwHmiWKlBcCGQXyNcAAQSzmBuoSQqYim3u37+/EKR48uTJv5ANB+bVr7Dga2xs/AkTV1JS+gq0AJyoQIkPWU9aWtoPkPibN2/2A/l6QCwJ9TULQADB4hcY//xKXl5eHt++fbsAUmxhYYHiM1DiAsr9R7ZcVVUVbikIdHd3/0TWIyws/AWYVsByAgICdkAxRSAWAGI2gACClV7C4uLiOv7+/lEgRZ8+ffqLLd6ABck3ZMuB6uCWrlu37je29HDx4kVwQisvL88FFqkaQDERUHADBBAomBl5eHiYgQmLE1hSgQQZgIUD1lJm69atf4HR8R1YKoH5QIPAWWP9+vV/gOI/gHkeQw+wGAXTwAJJ5t+/f/BUDRBA4NIEKMDMyMjICtQIiniG379/4yza7t69+//Lly8oDrty5co/bJaCAEwcZCkwwTJDLWYCCCCwxcDgY3z16hXDnTt3voP4EhISWA0BFgZMwNqHExh3jMiG1tbWsgHjnA2bHmAeBtdWwOL1MycnJ7wAAQggBmi+kgIW/OaKiorJwOLuFShO0LMSMPF9AUYBSpz6+vqixHlOTs4P9MIEWHaDsxSwYMoE2mEGFJcG5SKAAGJCqjv/AbPUn8ePH98ACQQHB6NUmZqamkzABIgSp5s3bwbHORCA1QDLAWZkPc7OzszA8oHl5cuXVy5duvQBGIXwWgoggGA+FgO6xkBNTS28r69vDrT2+Y1cIMDyJchX6KkXVEmAshd6KB06dAic94EO3AzkBwGxPhCLg8ptgACCZyeQp9jZ2b2AmsuAefM8tnxJCk5ISPgOLTKfAdNEOVDMA2QHLDsBBBC8AAFlbmCLwlZISCg5JSVlJizeQAaQaimoWAUFK0g/sGGwHiiWCMS2yAUIQAAxI7c4gEmeFZi4OJ48ecLMzc39CRiEmgEBASxA/QzA8vYvAxEgNjaWZc2aNezAsprp2LFjp4FpZRdQ+AkQvwLij0AMSoC/AQIIXklAC3AVUBoBxmE8sPXQAiyvN8J8fuPGjR/h4eHf0eMdhkENhOPHj8OT+NGjR88BxZuBOA5kJtRseCUBEECMSI0AdmgBDooDaaDl8sASTSkyMlKzpqZGU1paGlS7MABLrX83b978A6zwwakTmE0YgIkSnHpBfGCV+gxYh98qKSk5CeTeAxVeQPwUiN8AMSjxgdLNX4AAYkRqCLBAXcMHtVwSaLkMMMHJAvOq9IQJE9R8fHxElJWV1bEF8aNHj+7t27fvLTDlXwXGLyhoH0OD+DnU0k/QYAa1QP8BBBAjWsuSFWo5LzRYxKFYAljqiAHzqxCwIBEwMTERBdZeoOYMA7Bl+RFYEbwB5oS3IA9D4/IFEL+E4nfQ6IDFLTgvAwQQI5ZmLRtSsINSuyA0uwlBUyQPMPWD20/AKo8ByP4DTJTfgRgUjB+gFoEc8R6amGDB+wu5mQsQQIxYmrdMUJ+zQTM6NzQEeKGO4UJqOzFADQMZ/A1qCSzBfQXi71ALfyM17sEAIIAY8fQiWKAYFgIwzIbWTv4HjbdfUAf8RPLhH1icojfoAQKIEU8bG9kRyF0aRiz6YP0k5C4LsmUY9TtAADEyEA+IVfufGEUAAQYABejinPr4dLEAAAAASUVORK5CYII=) no-repeat;cursor:pointer}.module_video_dialog .el-dialog__body .full_screen_btn{position:absolute;top:-20px;right:-50px;width:30px;height:30px;background:url(/img/default_avatar1.035a0bb0.png) no-repeat;cursor:pointer}.fl[data-v-523dc18f]{float:left}.fr[data-v-523dc18f]{float:right}.text_center[data-v-523dc18f]{text-align:center}.text_left[data-v-523dc18f]{text-align:left}.text_right[data-v-523dc18f]{text-align:right}.text_overflow2[data-v-523dc18f]{text-overflow:-o-ellipsis-lastline;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical}.no_write_module_placeholder[data-v-523dc18f]{font-size:50px;text-align:center;margin-top:50px}.clearfix[data-v-523dc18f]:after,.clearfix[data-v-523dc18f]:before{content:" ";display:table}.clearfix[data-v-523dc18f]:after{clear:both}.clearfix[data-v-523dc18f]{*zoom:1}.text_overflow[data-v-523dc18f]{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.red_color_font[data-v-523dc18f]{color:#fa541c}.main_color_font[data-v-523dc18f]{color:#26bf80}.white_color_font[data-v-523dc18f]{color:#fff}.grey_color_font[data-v-523dc18f]{color:#8c8c8c}.orange_color_font[data-v-523dc18f]{color:#faad14}.dander_color[data-v-523dc18f]{color:#ff2a00}.small_size[data-v-523dc18f]{font-size:12px}.middle_size[data-v-523dc18f]{font-size:14px}.width_150[data-v-523dc18f]{width:150px}.ml_10[data-v-523dc18f]{margin-left:10px}.mr_10[data-v-523dc18f]{margin-right:10px}.font_weight[data-v-523dc18f]{font-weight:700}.pointer[data-v-523dc18f]{cursor:pointer}.delete_btn:hover span[data-v-523dc18f]{color:#fa541c!important}.module_add_wrong_dialog .dialog_content[data-v-523dc18f]{padding:20px}.module_add_wrong_dialog .dialog_content .hint[data-v-523dc18f]{font-size:12px;font-weight:700}.module_add_wrong_dialog .dialog_footer[data-v-523dc18f]{text-align:center;padding:10px 0 30px}.fl{float:left}.fr{float:right}.text_center{text-align:center}.text_left{text-align:left}.text_right{text-align:right}.text_overflow2{text-overflow:-o-ellipsis-lastline;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical}.no_write_module_placeholder{font-size:50px;text-align:center;margin-top:50px}.clearfix:after,.clearfix:before{content:" ";display:table}.clearfix:after{clear:both}.clearfix{*zoom:1}.text_overflow{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.red_color_font{color:#fa541c}.main_color_font{color:#26bf80}.white_color_font{color:#fff}.grey_color_font{color:#8c8c8c}.orange_color_font{color:#faad14}.dander_color{color:#ff2a00}.small_size{font-size:12px}.middle_size{font-size:14px}.width_150{width:150px}.ml_10{margin-left:10px}.mr_10{margin-right:10px}.font_weight{font-weight:700}.pointer{cursor:pointer}.delete_btn:hover span{color:#fa541c!important}.module_question_body{position:relative;height:auto;overflow:hidden;padding:0 30px;padding-top:10px;-webkit-transition:all 1s ease-in-out;transition:all 1s ease-in-out}.module_question_body .audio_wrapper{margin-bottom:20px}.module_question_body .editor_html_wrapper{word-break:break-all}.module_question_body .editor_html_wrapper p{margin:0}.module_question_body .body_content{padding-bottom:25px}.module_question_body .body_content 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