.tab-content {
  position: relative;
}

.subscribe-rss {
  position: absolute;
  top: -35px;
  right: 35px;
}

@media (max-width: 479px) {
  .subscribe-rss {
    top: 43px;
    right: auto;
    left: 30px;
    z-index: 2;
    display: inline;
  }
}