.stm_lms_online-testing {
    line-height: 36px;
    min-height: 500px;
    &:after {
        content: '';
        display: table;
        clear: both;
    }
    .stm-lms-course__lesson-content {
        padding: 0 0 50px;
    }
    .btn-back {
        display: none;
    }
}

.stm-online-testing {
    #main {
        padding: 80px 0;
        background: url(../../img/quiz_bg.png) 100% 0 no-repeat #f6f8fb;
    }
}