.pageSupportInstall{
    width:100%;
    height:100%;overflow:hidden;
}
    .pageSupportInstall div{
        width:100%;
    }
    .pageSupportInstall div img{
        width:100%;
    }
    .pageSupportInstall h2 {
        width: 90%;
        height: 40px;
        line-height: 40px;
        overflow: hidden;
        background-color: #5e6a92;
        color:#fff;
        padding:0 5%;
        font-size:16px;
    }