#dropinboxv2cover {
width: 330px; /*change width to desired */
height: 340px;  /*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: 100;
overflow:hidden;
visibility: hidden;
}

#dropinboxv2 {
width: 310px; /*change width to above width-20. */
height: 320px; /*change height to above height-20. REMOVE if you wish box to be content's natural height*/
border: 2px solid black; /*Customize box appearance*/
background-color: lightyellow;
padding: 7px;
position:absolute; /*Don't change below 3 rules */
left: 0;
top: 0;
}