#GridRight              { display:none; }
#GridLeft               { display:none; }
#GridContent            { margin-left:0px; }
#GridPage               { max-width:550px; width:auto; margin-left:auto; margin-right:auto; padding:0px 0px 0px 0px; text-align:center; }
#GridPage #body         { text-align:right; }
#GridPage #body video, iframe { width:100%; max-width:450px; }

@media screen and (max-width:640px) 
{
    #GridPage { padding-right:10px; padding-left:10px; }
}