<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">.container {
    width: 970px; margin:0 auto;
}
.container img{ max-width: 970px; }
.mui-col-sm-3 {
    width: 25%;
}.lesson .lesson-right { float: right;}
.mui-row &gt; [class*='mui-col-'] {
    float: left;
}
.mui-col-sm-9 {
    width: 73%; margin-left:2%
}
.lesson{margin-top:1.5rem;}
.lesson dt{font-family:"Microsoft YaHei";}
.lesson .lesson-left dl{margin-bottom:1rem;}
.lesson .lesson-left dl dt{
    background: #135d9f;
    text-align: center;
    font-size:1.2rem; color: #fff;
    padding: .8rem 1rem;
}
.lesson .lesson-left dl dd{
    border:solid 1px #eee;
    border-top:none;
    padding:.8rem 1rem;
}

p{color:#333;font-size:.9rem;line-height:1.8;}
span.mini-title{padding:.2rem .8rem; background: #eee;}

.lesson .lesson-right dl{margin-bottom:1rem;}
.lesson .lesson-right dl dt{ color: #fff;
    background: #135d9f;
    text-align: center;
    padding: .8rem 1rem;
    font-size:1.2rem;
}
.lesson .lesson-right dl dd{
    border:none;
    padding:.8rem 1rem;
    background: #fafafa;
}

.lesson-right h2{
    margin:0 0 1rem;
    padding:.5rem 0;
    text-align: center;
    font-size:1.4rem;
    font-weight: normal;
    background: #eee;
}

.lesson-right h3{
    margin:0 0 1rem;
    padding:.2rem;
    text-align: left;
    font-size:1.4rem;
    font-weight: normal;
    line-height:1.8;
    color:#333;
}


h2,h3{
    font-family:"Microsoft YaHei";
}

.lesson-right .sub-title{
    padding-left:.1rem;
    padding-right:1rem;
}
.lesson-right .sub-title2{
    padding-left:1rem;
    padding-right:1rem;
}



.lesson-lecturer{
    margin-top:1.5rem;
}
.introductions{margin-top:1.5rem;}
.introductions .introductions-header{
    background: #135d9f;
    color:#fff;
    font-size:1.3rem;
    padding:.5rem 1rem;
    text-align: center;
    font-family:"Microsoft YaHei";
}
.introductions .introductions-body{padding:1rem;background: #f6f6f6;}
.introductions .introductions-body p{color:#333;}
.mui-row:before, .mui-row:after {
    display: table;
    content: ' ';
}</pre></body></html>