Modal css

Modal.css

#modal_form {
  height: 300;
  max-width: 700px;
  margin-top: -150px;
  width: 100%;
  margin-left: -350px;
  border-radius: 5px;
  border: 3px #000 solid;
  background: #fff;
  position: fixed;
  top: 50% !important;
  left: 50%;
  display: none;
  opacity: 0;
  z-index: 9999;
  padding: 0 0 5px;
  text-align: center;
}

#overlay {
	z-index:9996;
	position:fixed;
	background-color:#000;
	opacity:0.8;
	-moz-opacity:0.8;
	filter:alpha(opacity=80);
	width:100%; 
	height:100%;
	top:0;
	left:0;
	cursor:pointer;
	display:none;
}