.link_pic img{
  width:40%;
}

.iframe-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow:auto; 
  -webkit-overflow-scrolling:touch;
  border:2px solid #ccc; 
}

.iframe-wrapper iframe {
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    border:none;
    display:block;
  max-width:100%!important;
}