#overlay {
  position: fixed; 
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: 0.7;
  filter: alpha(opacity=70);
  z-index:4566221;
}
#modal {
  position:absolute;
  background:rgba(0,0,0,0.2);
  border-radius:14px;
  padding:8px;
  width:80%;
  display:block;
  margin-left:10%;
  margin-right: auto;
  z-index:4566221;
}
#content {
  border-radius:8px;
  background:#fff;
  padding:20px;
}
#close {
  position:absolute;
  background:url(http://gilika.com/themes/responsiv-flat/assets/images/close.png) 0 0 no-repeat;
  width:24px;
  height:27px;
  display:block;
  text-indent:-9999px;
  top:-7px;
  right:-7px;
}