body {
    background-image: url(/src/assets/apollo/plaid_bg.gif);
    padding: 40px;
}
div.gallery img {
  width: 100%;
  height: auto;
}
.responsive {
  padding: 12 12px;
  float: left;
  width: 22%;
}
#back {
    margin: 100px;
    text-align: center;

}