.back-to-top { display: none; position: fixed; bottom: 80px; width: 38px; height: 38px; margin-left: 919px; background: rgba(223, 223, 223, .87); z-index: 10; cursor: pointer; }
.back-to-top:before { content: ''; display: block; height: 38px; background: url(/landings/images/arrow_to_up.png) center no-repeat; }
.back-to-top:hover { background: rgba(223, 223, 223, 1) }

@media only screen and (max-width: 997px) {
  .back-to-top { right: 20px; margin-left: 0; }
}