.postBody {
    color: #000;
    line-height: 1.7;
    font-size: 15px;
}
.postBody h2 {
    box-shadow: -5px 5px 20px #8A9FD5;
    padding: 2px 10px;
    border-radius: 10px;
}
.postBody h3 {
    box-shadow: -5px 5px 20px #8A9FD5;
    padding: 2px 10px;
    border-radius: 10px;
}


/* 固定标签栏 */
.clearfix:before, .clearfix:after { content:""; display:table; }
    .clearfix:after { clear: both; }
    .clearfix { zoom: 1; }