footer .flex_row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}
.back_to_top {
  border-style: solid;
  border-width: 1px;
  bottom: 100px;
  opacity: 1;
  transform: none;
  visibility: visible;
}