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Create a Lightbox effect only with CSS – no javascript needed

Chủ Nhật, 9 tháng 1, 2011
You may call it Lightbox, or Greybox, or Thickbox, but it’s always the same effect.
When you are on a page, and click on a photo or trig some event, a Lightbox is an effect that fades the pagein the background to show you new content in the foreground.
I mean this effect

Lightbox


In the upper example, when clicking on a photo the site fades to black and shows the photo, in the lower one when clicking on “login” the site fades to white and shows the login form.
There are tons of Lightbox scripts in the web, each one with its unique features and limitations, but all require massive use of Javascript or the installation of javascript frameworks.
In some cases, there are “lightweight” versions with “only” 40KB of Javascript.
This example does not want to compete with those scripts, but if you are looking for a simple, 100% CSS, 0% javascript lightbox, this may help you.
Features of this Lightbox:
100% CSS as said
You can insert any content in it (some scripts out there only allow images)
That’s all. Did you need something more? Think wisely…
Let’s start with the CSS



<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <title>LIGHTBOX EXAMPLE</title>
  <style>
  .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: 25%;
   left: 25%;
   width: 50%;
   height: 50%;
   padding: 16px;
   border: 16px solid orange;
   background-color: white;
   z-index:1002;
   overflow: auto;
  }
 </style>
 </head>
 <body>
  <p>This is the main content. To display a lightbox click <a href = "javascript:void(0)" onclick = "document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block'">here</a></p>
  <div id="light" class="white_content">This is the lightbox content. <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>
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