.banner {
  position: relative;
}
.banner button {
  position: absolute;
  left: 13%;
  bottom: 23%;
  width: 13%;
  padding: 5px 0 13px;
  background: url("../images/second_bannerButton.png") no-repeat;
  background-size: 100% 100%;
  outline: none;
  border: none;
  font-size: 24px;
  color: #ffffff;
  cursor: pointer;
}