.stm_lms_online-testing{line-height:36px;min-height:500px}.stm_lms_online-testing:after{content:'';display:table;clear:both}.stm_lms_online-testing .stm-lms-course__lesson-content{padding:0 0 50px}.stm_lms_online-testing .btn-back{display:none}.stm-online-testing #main{padding:80px 0;background:url(../../img/quiz_bg.png) 100% 0 no-repeat #f6f8fb}