<style type="text/css">
    .Abstract
    {
        padding: 15px;
        border: dotted 2px #999;
        color: #999;
        font-family: 'Microsoft Yahei';
        border-radius: 4px;
    }
        
    .First
    {
        margin: 10px 0;
        font-family: 'Microsoft Yahei';
        text-align: left;
        padding: 6px 20px;
        color: #fff;
        background: #55895B;
        font-size: 20px;
        border-radius: 4px;
        clear: both;
    }
        
        
    .Second
    {
        margin: 10px 0;
        font-family: 'Microsoft Yahei';
        padding: 6px 20px;
        background: #93C8A2;
        color: #fff;
        font-size: 18px;
        border-radius: 4px;
        clear: both;
    }
        
        
    .Third
    {
        margin: 10px 0;
        padding: 6px 20px;
        font-family: 'Microsoft Yahei';
        margin: 15px 0;
        font-size: 16px;
        color: fff;
        background: #C6EFD2;
        color: #999;
        border-radius: 4px;
        clear: both;
    }
    .note
    {
        margin: 10px 0;
        padding: 15px 20px 15px 60px;
        background: #FCFAA9 url('https://images.cnblogs.com/cnblogs_com/libaoheng/305804/o_yellow-pin.png') no-repeat 20px 0;
        font-size: 15px;
        font-family: 'Microsoft Yahei';
        box-shadow: 0 0 8px #aaa;
        clear: both;
    }
        
    .demo
    {
        text-align: left;
        padding: 6px 20px;
        overflow: auto;
        border-radius: 4px;
        background: orange;
        color: #fff;
        font-size: 16px;
        clear: both;
    }
        
    .cnblogs_Highlighter
    {
        border: solid 1px #ccc;
        clear: both;
    }
        
    .cnblogs_code
    {
        background: #EFFFF4;
        border: solid 0px #939393;
        font-size: 14px;
        clear: both;
        padding: 10px 20px;
    }
    .cnblogs_code pre
    {
        font-size: 14px;
    }
    .cnblogs_code span
    {
        font-family: Courier New;
        font-size: 14px;
    }
</style>