.topBtn {
  display: inline-block;
  height: 40px;
  width: 40px;
  position: fixed;
  bottom: 40px;
  right: 10px;
  z-index: 999;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
  background: #e23737 url(../images/topArrow.svg) no-repeat center 50%;
  visibility: hidden;
  opacity: 0;
  border: 2px solid #fff;
  border-radius: 100%;
  -webkit-transition: opacity .3s 0s, visibility 0s .3s;
  -moz-transition: opacity .3s 0s, visibility 0s .3s;
  transition: opacity .3s 0s, visibility 0s .3s;
}

.topBtn.topVisible, .topBtn.topFadeOut, .no-touch .topBtn:hover {
  -webkit-transition: opacity .3s 0s, visibility 0s 0s;
  -moz-transition: opacity .3s 0s, visibility 0s 0s;
  transition: opacity .3s 0s, visibility 0s 0s;
}
.topBtn.topVisible {
  visibility: visible;
  opacity: 1;
}
/*.topBtn.topFadeOut {
  opacity: .5;
}*/
.no-touch .topBtn:hover {
  background-color: #313335;
  opacity: 1;
}


@media only screen and (min-width: 768px) {
  .topBtn {
    right: 20px;
    bottom: 20px;
  }
}
@media only screen and (min-width: 1024px) {
  .topBtn {
    border-radius: 200px;
    bottom: 30px;
    height: 40px;
    right: 30px;
    width: 40px;
  }
}