    <style type="text/css">
iframe#memoframe {
  margin: 0 -20px 0px -23px; 
  max-width: 1000px;
}

@media screen and (max-width: 659.9px) {
  iframe#memoframe {
    max-width: 600px;
    height: 500px;
    }
}
@media screen and (max-width:479.9px) {
    iframe#memoframe {
      max-width: 400px;
        height: 400px;
    }
}
    </style>