.skyscraper{display:none;height:600px;margin:1em 5em;position:sticky;top:0;box-shadow: 0px 0px 15px #000;}


@media only screen and (min-width: 1400px) 
{
    .skyscraper{width:120px;display:inline-block;}
}

@media only screen and (min-width: 1500px) 
{
    .skyscraper{width:160px;}
}

@media only screen and (min-width: 1800px) 
{
    .skyscraper{width:300px;}
}