.wrap_1200{
    margin-top: 10px;
}
.ad_fixed{
    position: fixed;
    top: 365px;
    width: 100px;
    height: 300px;
    background: #fff;
    z-index: 100;
}
.ad_fl{
    left: 0;
}
.ad_fr{
    right: 0;
}
.ad_box{
    overflow: hidden;
}
.ad_box img{
    margin-top: 5px;
    display: block;
}
.ad_left{
    float: left;
    margin-right: 15px;
}
.ad_box .ad_left:last-child{
    float: right;
    margin-right: 0;
}
.ad_w3{
    width: 32.5%;
}
.ad_w2{
    width: 49%;
}