.ebam_ad {
  text-align: center;
}

.ebam_ad.p15 {
  padding: 15px;
}

.ebam_ad.ebam_surrounded {
  float: left;
}

.ebam_ad.ebam_surrounded.ebam_alternated:nth-of-type(2n) {
  float: right;
  margin-left: 15px !important;
}

.ebam_ad.ebam_surrounded.ebam_alternated:nth-of-type(2n-1) {
  margin-right: 15px !important;
}

.ebam_ad.ebam_surrounded:not(.ebam_alternated) {
  margin-right: 15px !important;
}