.topButton {
  position: fixed;
  right: 40px;
  bottom: 150px;
}
.topButton img {
  cursor: pointer;
  width: 53px;
}
.topButton::before {
  display: block;
  content: '';
  transform: rotate(45deg) translateX(14px);
  width: 30px;
  height: 30px;
  border: 15px solid #663333;
  border-bottom-color: transparent;
  border-right-color: transparent;
}
.topButton div {
  text-align: center;
  font-size: 18px;
  border-bottom: 2px solid #663333;
  color: #663333;
}