#simplemodal-overlay {
    background-color:#000;
}

#simplemodal-container {
    background-color:#FFFFFF;
    border:3px solid #CCCCCC;
    height:100px;
    margin:10px;
    padding:10px;
    width:350px;
}

#simplemodal-container a.modalCloseImg {
	background:url(../images/x.png) no-repeat; /* adjust url as required */
	width:25px;
	height:29px;
	display:inline;
	z-index:3200;
	position:absolute;
	top:-15px;
	right:-18px;
	cursor:pointer;
}