.SubjectPreviewImg{width:230px;height:132px}.SubjectPreviewImg img{width:100%;height:100%}.SubjectPreviewBox{margin-top:20px;border:1px solid #E5E5E5;float:left;margin-left:10px;text-align:center}.SubjectPreviewBox .SubjectPreviewText{padding:15px 0 10px 0;background:#fff}.SubjectPreviewText p{line-height:20px;width:230px;height:40px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;padding:0 10px;text-align:left}.NavAction{border-bottom:2px solid #ff6700;color:#ff6700}.subjectBox{width:100%;padding:20px 0 50px 0}.subject_nav{max-width:1000px;margin:0 auto}.SubjectClass{display:inline-block;vertical-align:top;padding:0 10px;width:100%;background:#fff;box-shadow:1px 1px 1px #ddd;padding-bottom:20px}.SubjectClass h3{display:inline-block;margin-left:15px}.SubjectClassBoder{border-bottom:1px solid #DCDCDC}.SubjectClass .ClassBox{width:868px;padding:10px 0}.SubjectClassBoder h3{margin-top:10px}.SubjectClass .ClassBox li{margin:5px 0;display:inline-block;font-size:12px;margin-left:10px;border:1px solid #DADADA;padding:2px 10px;border-radius:3px;position:relative}.SubjectClass .ClassBox li .classBox2{z-index:9;position:absolute;background:#fff;text-align:center;border-bottom:1px solid #ddd;left:0;top:23px;display:none}.SubjectClass .classBox2 p{display:block;border-radius:0;padding:4px 10px;border:1px solid #DADADA;border-bottom:0;margin:0;text-align:center;color:#000;cursor:pointer}.classBox2{width:100%;border-top:0}.classBox2 p{z-index:99999999999999}.hint{text-align:center;font-size:18px}.about_img img{width:160px;height:150px}.hint img{width:380px;height:400px}.paging .pagination{margin:40px 0;margin-left:50%;transform:translateX(-50%);font-size:14px}.pagination>li>a{margin:0 5px}.omit{border:none!important;cursor:auto}.omit:hover{background:#fff!important}.addBlue a{background:#eee!important}.pagination>li:first-child>a{margin-left:0;border-top-left-radius:0;border-bottom-left-radius:0}.SubjectVideo{overflow:hidden}