#toTopBtn {
	  display: none;
	  position: fixed;
	  bottom: 20px;
	  right: 30px;
	  z-index: 99;
	  font-size: 18px;
	  border: none;
	  outline: none;
	  background-color: red;
	  color: white;
	  cursor: pointer;
	  padding: 15px;
	  border-radius: 4px;
	}

#toTopBtn:hover {
	  background-color: #555;
	}