#cboxClose{
background-image: url('/App_Plugin/Colorbox/Bt_close.png') !important;
background-repeat: no-repeat !important;
position: absolute !important;
display: block !important;
color: #444 !important;
bottom:-6px !important;
right:-3px !important;
height: 35px !important;
width: 35px !important;
background-position: center !important;
background-size: cover !important;
}