<!--MarkDown 分割线样式-->
hr {
    -moz-border-bottom-colors: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    background: transparent none repeat scroll 0 0;
    border-color: -moz-use-text-color -moz-use-text-color #ddd;
    border-image: none;
    border-style: none none solid;
    border-width: medium medium 4px;
    clear: both;
    height: 0;
    margin: 15px 0;
    overflow: hidden;
    padding: 0;
}

<!--评论提交按钮样式-->
.comment_btn {
    background: #21759b none repeat scroll 0 0;
    border: medium none;
    border-radius: 3px;
    color: #fff;
    cursor: pointer;
    display: inline-block;
    font-size: 14px;
    height: 38px;
    outline: medium none;
    padding: 8px 20px;
    text-align: center;
    text-decoration: none;
    transition: all 0.4s ease 0s;
    vertical-align: middle;
    width: 100px;
}