.clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
}
.howUser-box {
    width: 1200px;
    margin: 0 auto;
    min-height: calc(100vh - 161px);
    margin-bottom: 20px;
}
    .howUser-box .left-box {
        width: 220px;
        float: left;
        background-color: #F4F4F4;
        color: #949494;
        font-size: 14px;
        min-height: 320px;
        padding-bottom: 20px;
    }
        .howUser-box .left-box h2 {
            border-left: #ffaf35 6px solid;
            line-height: 36px;
            padding-left: 25px;
            font-size: 14px;
            margin: 0;
        }
        .howUser-box .left-box .howUser-nav>a {
            line-height: 40px;
            padding-left: 55px;
            
        }
            .howUser-box .left-box .howUser-nav > a.active,
            .howUser-box .left-box .howUser-nav > a:hover{
                color: #FFAF35;
            }
            .howUser-box .right-box {
                width: 960px;
                float: right;
                background-color: #F4F4F4;
                padding: 20px;
            }
            .howUser-box .right-box .article-content img{
                width: 98%;
                
            }
                .howUser-box .right-box table td {
                    padding: 12px;
                }
                
.howUser-box .right-box .font1 {
    font-size: 20px;
    color: #2B6DA0;
    font-family: 微软雅黑;
    font-style: normal;
    margin-left: 10px;
    font-weight: bolder;
}
.howUser-box .right-box h2 {
    border-bottom: 1px solid #DDDDDD;
    line-height: 40px;
    margin: 0;
    color: #43AAF9;
    font-size: 20px;
    font-family: 微软雅黑;
    font-weight: bolder;
}
.howUser-box .right-box h3 {
    font-size: 18px;
}
                .howUser-box .right-box p {
                    line-height: 1.8;
                    padding-left: 2em;
                    color: #666666;
                }
    .howUser-box .right-box .span4 {
        padding: 12px 0 5px;
        display: block;
    }
    .howUser-box .right-box p.span9 {
        color: #2179cc;
        line-height: 24px;
        position: absolute;
        cursor: pointer;
        padding-left: 0;
    }
    .red {
        color: red!important;
    }
        .friendship-list {
                width: 1200px;
    margin: 0 auto;  
    margin-top: 20px;
    margin-bottom: 10px;
}
    .friendship-list h2 {
    border-bottom: 1px solid #e3e0e0;
    line-height: 30px;
    color: #333;
    font-weight: 600;
    font-size: 16px;
}
.friendship-list ul {
    overflow: hidden;
    padding: 5px 0;
}
.friendship-list ul li {
    float: left;
    line-height: 26px;
    text-align: center;
    list-style: none;
}
.friendship-list ul li a{
    color: #333;
}
.friendship-list ul li:not(:last-child) {
    margin-right: 10px;
}
.friendship-list ul li:not(:last-child) a {
    border-right: 1px solid #d4d4d4;
    padding-right: 10px;
}
#footer-sec a{
    color: #9d9d9d;
}