.cd-top {
  display: inline-block;
  height: 60px;
  width: 60px;
  position: fixed;
  bottom: 25px;
  right: 15px;
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  /* image replacement properties */
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
  background: rgba(135, 198, 86, 0.9) url(../images/common/arrow_totop.png) no-repeat center 50%;
  background-size:25px;
  visibility: hidden;
  opacity: 0.6;
  -webkit-transition: opacity .3s 0s, visibility 0s .3s;
  -moz-transition: opacity .3s 0s, visibility 0s .3s;
  transition: opacity .3s 0s, visibility 0s .3s;
}
.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: .9;
}
.no-touch .cd-top:hover {
  background-color: #87c656;
  opacity: 1;
}
/* @media only screen and (min-width: 768px) {
  .cd-top {
    right: 140px;
    bottom: 20px;
  }
} */
@media only screen and (min-width: 1024px) {
  .cd-top {
    height: 60px;
    width: 60px;
    right: 40px;
    bottom: 40px;
    border-radius: 8px;
  }
}