.topbanner1 {
 list-style: none;
    width: 100%;
    height: 31em;
}
 
.topbanner1 li {
  margin: 10px;
    width: 47%;
    display: inline-block;
}
 
.topbanner1 li:hover {
  opacity: 0.6;
  transition-duration: 0.3s;
}
 
.topbanner1 img {
  width: 100%;
  border: solid 0.5px #e4e4e4;
}

#access {
  padding-top: 150px;
    margin-top:-150px;
}