iFrame with Fixed Header

iFrame with Fixed Header

#headerfix {
    height: 60px;
    background-color:#DDD;
    background: url(http://placehold.it/1128x70&text=FIX%20Header%20iframe) repeat-x top left;
    border-bottom: 3px solid #59A3C8;
    z-index: 99999;
    position: fixed;
    width: 100%;
}
#preview-frame {
    margin: 0 auto;
    display: block;
    padding-top: 60px;
    width:100%;
    height: 581px;
}

DEMO