#topics .postTitle {
    font-size: 30px;
    font-weight: bold;
    float: left;
    line-height: 1.5;
    padding-left: 5px;
}
body {
    color: #000;
    background: #fff;
    font-family: 'PingFang SC','Helvetica Neue','Helvetica','Arial','Microsoft Yahei',sans-serif;
    font-size: 12px;
    min-height: 101%;
    background: url(https://s2.ax1x.com/2019/09/09/nNpTx0.jpg) top center #cbdcec;
    background-size: 100% auto;
    background-attachment: fixed;
}
#navigator {
  
    background: rgba(0,71,157,0.3); 
    height: 60px;
    clear: both;
    margin-top: 60px;
    position: relative;
}
.clear {
    clear: both;
color:  rgba(0,71,157,0.3);
}

#main {
    min-width: 980px;
    text-align: left;
    clear: both;
    background:  rgba(255,255,255,0.8);
}
#mainContent {
    min-height: 200px;
    -o-text-overflow: ellipsis;
    text-overflow: ellipsis;
    overflow: hidden;
    word-break: break-all;
    float: left;
    width: 700px;
    background: rgba(255,255,255,0.8);
}
#sideBar {
    min-height: 200px;
    padding: 0 5px 0 5px;
    margin-left: 700px;
    -o-text-overflow: ellipsis;
    text-overflow: ellipsis;
    overflow: hidden;
    word-break: break-all;
    _margin-left: 0;
    _width: 240px;
    padding-bottom: 20px;
    background:rgba(247,251,253,0.8);
}