.mw-pictures-clean{
  zoom:1;
  position: relative;
}

.mw-pictures-clean:after{
    content: ".";
    display: block;
    clear: both;
    visibility: hidden;
    line-height: 0;
    height: 0;
}

.mw-pictures-clean-item{
  float: left;
  width: 48%;
  padding-bottom: 20px;
}
.mw-pictures-clean .mw-pictures-clean-item:nth-child(2n){
    float: right;
}
.mw-pictures-clean .mw-pictures-clean-item:nth-child(2n+1){
    clear: both;
}

.mw-pictures-clean-item img{
  width: 100%;
  height: auto;
}
