#header iframe {
    position: relative;
    left: 50vw;
    transform: translateX(-50%);
}

.sideAd {
    position: absolute;
    top: 0px;
    left: 0px;
    display: none;
}

.sideAd iframe {
    position: fixed;
    top: 50vh;
    transform: translateY(-50%);
}

.leftAd iframe {
    left: 0px;
}

.rightAd iframe {
    right: 0px;
}

@media screen and (min-width: 1200px) {
  .sideAd {
    display: block;
  }
}