.scroll-to-top {
  position: fixed;
  bottom: -1px;
  right: 0;
  background-color: #292929;
  opacity: 0.5;
  color: #ffffff;
  display: none;
  margin-right: 20px;
  cursor: pointer;
  transition: 0.25s;
  vertical-align: middle;
  z-index: 99;
  height: 40px;
  width: 40px;
  line-height: 40px;
  text-align: center;
  font-size: 16px;
}

.scroll-to-top img {
  width: 100%;
}

.scroll-to-top:hover {
  opacity: 1;
}

.cpsr {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}