.demo-option-buttons {
  font-size: 0;  
}

.demo-option-buttons > a {
  display: inline-block;
  width: 48%;
  margin: 30px 1%;
  text-decoration: none;
  border-bottom: none;
  overflow: hidden;
  vertical-align: top;
}

.demo-option-buttons > a:hover {
  opacity: 0.6;
}

.demo-option-buttons > a:hover img {
  transition: ease-in-out 5s;
}

.demo-option-buttons a .demo-option-title {
  display: block;
  margin-top: 20px;
  font-size: 22px;
  color: #484848;
}