.avibannerslides {
  position: relative;
  list-style: none;
  overflow: hidden;
  padding: 0;
  margin: auto;
  }

.avibannerslides li {
  -webkit-backface-visibility: hidden;
  position: absolute;
  display: none;
  max-width: 100%;
  left: 0;
  top: 0;
  }

.avibannerslides li:first-child {
  position: relative;
  display: block;
  float: left;
  }

.avibannerslides img {
  display: block;
  height: auto;
  float: left;
  max-width: 100%;
  border: 0;
  }

.avibannerslides.megabanner{
    max-width: 1200px;
}
.avibannerslides.skyscraper{
    max-width: 300px;
}