.wrapper {
  width: 100%;
  margin: 0 auto;
}
.selector {
  width: 100%;
  height: 30px;
  position: absolute;
  bottom: 61%;
 opacity: 0;
}

.selector .triangle {
  display: block;
  width: 0;
  height: 0;
  border-top: 7px solid #499bc6;
  border-right: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 7px solid transparent;
  position: absolute;
  top: 15px;
  left: 90px;
	transition: all 0.3s ease-out;
}