.eca_content_ads_content {
    float: left;
    margin: 5px 5px 5px 5px;
}
.eca_content_ads_content.eca_ad_size_200x200 { width: 200px; height: 200px; }
.eca_content_ads_content.eca_ad_size_250x250 { width: 250px; height: 250px; }
.eca_content_ads_content.eca_ad_size_300x300 { width: 300px; height: 300px; }
.eca_content_ads_content.eca_ad_size_300x250 { width: 300px; height: 250px; }
.eca_content_ads_content.eca_ad_size_336x280 { width: 336px; height: 280px; }