/*****home和头部开始**************************/
#home {
    }

/*去掉广告*/
#site_nav_under {
    display: none;
}
.c_ad_block, .ad_text_commentbox {
    display: none;
    margin: 0;
    padding: 0;
}
#ad_under_google {
    height: 0;
    overflow: hidden;
}
#ad_under_google a {
    display: none;
}

/*以下做了修改*/
#mainContent{
float:right;
}
#sideBar {
    margin-right: 20px;
margin-left: 0px;
}
body {
    background: lightsteelblue;
}