纯CSS Lightbox效果（无需JS）-弹出层-背景变灰_simplelightbox 背景色-优快云博客

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <title>纯CSS Lightbox效果（无需JS）</title>
  <style>
  body{font-size:11px; font-family:Verdana, Arial, Helvetica, sans-serif;}
  a{color:#000; text-decoration:none;}
  .img{border:0px;}
  .black_overlay{
   display: none;
   position: absolute;
   top: 0%;
   left: 0%;
   width: 100%;
   height: 100%;
   background-color: black;
   z-index:1001;
   -moz-opacity: 0.8;
   opacity:.80;
   filter: alpha(opacity=80);
  }
  .white_content {
   display: none;
   position: absolute;
   top: 15%;
   left: 25%;
   width: 632px;
   height: 445px;
   border: 16px solid #FFF;
   border-bottom:none;
   background-color: white;
   z-index:1002;
   overflow: auto;
  }
</style>
</head>
<body>
<p><a href = "#" onclick = "document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block'"><img src="http://js.jianjie8.com/UploadFiles_7746/200912/20091219120500891.jpg"/></a></p>
  <div id="light" class="white_content"><img src="http://js.jianjie8.com/UploadFiles_7746/200912/20091219120501602.jpg"/> <a href = "javascript:void(0)" onclick = "document.getElementById('light').style.display='none';document.getElementById('fade').style.display='none'">Close</a></div>
  <div id="fade" class="black_overlay"></div>
</body>
</html>