gistfile1.css

/* ==========================================================================
   These rules only target membership ads
========================================================================== */

#membership-ad-frame-wrapper.has-ad {
    position: relative;
    padding-top: 16%;
}
@media only screen and (min-width: 22.5625em) {  //361px
    #frame-wrapper.has-ad {
        padding-top: 14%;
    }
}
#membership-ad-frame-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}