.First{
margin: 10px 0;
        font-family: 'Microsoft Yahei';
        text-align: left;
        padding: 6px 20px;
        color: #fff;
        background: #95D3E3;
        font-size: 20px;
        border-radius: 4px;
        clear: both;
        font-weight: bold;
}
.second
    {
        margin: 10px 0;
        font-family: 'Microsoft Yahei';
        padding: 6px 20px;
        background: #00BFFF;
        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: #4169E1;
        color: #999;
        border-radius: 4px;
        clear: both;
    }