#totopBtn {
  display: none;
  position: fixed;
  bottom: 120px;
  right: 30px;
  z-index: 99;
  border: none;
  outline: none;
  background-color: #6593C5;
  color: white;
  cursor: pointer;
  padding: 6px 15px 8px;
  border-radius: 10px;
  font-size: 18px;
}

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

.totopBtn {
	position: relative;
	background: #88b7d5;
	border: 4px solid #c2e1f5;
}
.totopBtn:after, .totopBtn:before {
	bottom: 100%;
	left: 50%;
	border: solid transparent;
	content: "";
	height: 0;
	width: 0;
	position: absolute;
	pointer-events: none;
}

.totopBtn:after {
	border-color: rgba(136, 183, 213, 0);
	border-bottom-color: #88b7d5;
	border-width: 10px;
	margin-left: -10px;
}
.totopBtn:before {
	border-color: rgba(194, 225, 245, 0);
	border-bottom-color: #c2e1f5;
	border-width: 16px;
	margin-left: -16px;
}

#totopBtn i { font-size: 35px; }