.vid203{
  position: relative;
  width: 100%; 
  height: auto;
}
.vid320{
  position: relative;
  width: 100%; 
}
.vid480{
  position: relative;
  width: 100%; 
  height: auto;
  float: right;
  padding-right: 5px
}
.vid640{
  position: relative;
  width: 100%; 
  height: auto;
  float: right;
  padding-right: 5px
}