.top-page {
  position: fixed;
  bottom: 170px;
  right: 50px;
  width: 65px;
  height: 65px;
  background: #293147;
  border-radius: 35px;
  cursor: pointer;
  opacity: 1;
  transition: 0.3s ease;
}

.top-page.hide {
  opacity: 0;
}

#top-page::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-bottom: 1px solid #ffffff;
  border-right: 1px solid #ffffff;
  -webkit-transform: translate(-50%, -50%) rotate(-135deg);
  -ms-transform: translate(-50%, -50%) rotate(-135deg);
  transform: translate(-50%, -50%) rotate(-135deg);
}

@media screen and (max-width: 767px) {
  #top-page {
    width: 50px;
    height: 50px;
    right: 10px;
    bottom: 130px;
  }
}