.galleryBox ul {
  overflow: hidden;
  padding-bottom: 30px;
}

.galleryBox ul:last-child {
  padding-bottom: 0;
}

.galleryBox ul li {
  padding-right: 20px;
  padding-bottom: 20px;
  float: left;
  width: 280px;
}

.galleryBox ul li:nth-child(even) {
  padding-right: 0;
}