.cd-top {
  display: inline-block;
  height: 45px;
  width: 45px;
  position: fixed;
  bottom: 10px;
  left: 10px;
  border-radius:50%;
  -ms-border-radius:50%;
  -o-border-radius:50%;
  -moz-border-radius:50%;
  -webkit-border-radius:50%;
  /* image replacement properties */
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
  background: rgb(162, 140, 104) url(../img/cd-top-arrow.svg) no-repeat center 50%;
  opacity: 0;
  -webkit-transition: opacity .3s 0s, visibility 0s .3s;
  -moz-transition: opacity .3s 0s, visibility 0s .3s;
  transition: opacity .3s 0s, visibility 0s .3s;
  z-index: 200;
}
.cd-top.cd-is-visible, .cd-top.cd-fade-out, .no-touch .cd-top:hover {
  -webkit-transition: opacity .3s 0s, visibility 0s 0s;
  -moz-transition: opacity .3s 0s, visibility 0s 0s;
  transition: opacity .3s 0s, visibility 0s 0s;
}
.cd-top.cd-is-visible {
  /* the button becomes visible */
  visibility: visible;
  opacity: 1;
}
.cd-top.cd-fade-out {
  /* if the user keeps scrolling down, the button is out of focus and becomes less visible */
  opacity: .5;
}
.no-touch .cd-top:hover {
  background-color: rgb(160, 170, 170);
  opacity: 1;
}
@media only screen and (min-width: 768px) {
  .cd-top {
    left: 10px;
    bottom: 0;
  }
}
@media only screen and (min-width: 1024px) {
  .cd-top {
    height: 45px;
    width: 45px;
    left: 30px;
    bottom: 30px;
  }
}