body {
  background-image: url(images/pattern.png);
}
div.gallery {
  margin: 20px;
  border: 1px solid #ccc;
  float: left;
  width: 180px;
}

div.gallery:hover {
  border: 1px solid #777;
}

div.gallery img {
  width: 100%;
  height: auto;
}

div.desc {
  padding: 15px;
  text-align: center;
}
footer {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%; 
}
.desc {
  text-align: center;
  font-family: Georgia, serif;
  font-size: 20px;
  color: #8A2BE2;
}