#dropinboxv2cover{
width: 600px; /*change width to desired */
/*height: 570px;  change height to desired. REMOVE if you wish box to be content's natural height */
position:absolute; /*Don't change below 4 rules*/
z-index: 10;
overflow:hidden;
visibility: hidden;
}

#dropinboxv2{
width:580px; /*change width to above width-20. */
/*height: 550px; change height to above height-20. REMOVE if you wish box to be content's natural height*/
border: 2px solid red; /*Customize box appearance*/
background-color: white;
padding: 4px;
position:absolute; /*Don't change below 3 rules */
left: 0;
top: 0;
z-index: 10;
}