#content {
  margin-top: 20px;
}

.thumbnail-image {
  display: block;
  margin: 2px;
  border: 1px solid #ccc;
  float: left;
}
.thumbnail-image:hover {
  opacity: 0.9;
}

.detail-image {
  img {
    max-width: 100%;
  }
  a {
    display: block;
    text-align: center;
  }
}