.cd-container {
  width: 90%;
  max-width: 768px;
  height:3000px;
  margin: 2em auto;
  display:block
}
.cd-container::after {
  /* clearfix */
  content: '';
  display: table;
  clear: both;
}

.cd-top {
  display: inline-block;
  height: 60px;
  width: 60px;
  position: fixed;
  bottom: 30px;
  right: 30px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
  /* image replacement properties */
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
  background: rgba(187, 187, 187, 0.8) url(../images/common/cd-top-arrow.svg) no-repeat center 50%;
  visibility: hidden;
  opacity: 0;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}
.cd-top.cd-is-visible {
  visibility: visible;
  opacity: 1;
}
.cd-top.cd-fade-out {
  opacity: .5;
}
.no-touch .cd-top:hover {
  background-color: #e86256;
  opacity: 1;
}