.gallery-tile {
  width:  33.3%;
  height: 50%;
  margin: -1px;
  float: left;
  display: table-cell;
  vertical-align: top;
  text-align: center;
  font-size: 16px;
  font-weight: 300;
}

.gallery-tile img {
  height: 85%;
}

.button-close {
    /*float:right;*/
    /*margin-top:-30px;
    margin-right:-30px;*/
    position: absolute;
    top: 100px;
    left: 100px;
    width: 32px;
    height: 32px;
    color: #fff;
    border: 1px solid #808080;
    border-radius: 50%;
    text-align: center;
    background: rgba(160,160,160,0.5);
    font-size: 24px;
    font-weight: 300;
    line-height: 28px;
    display: inline-block;
}