Positioning <div> element at center of screen

I want to position a <div> (or a <table>) element at the center of the screen irrespective of screen size. In other words, the space left on 'top' and 'bottom' should be equal and space left on 'right' and 'left' sides should be equal. I would like to accomplish this with only CSS.

I have tried the following but it is not working:

 <body>
  <div style="top:0px; border:1px solid red;">
    <table border="1" align="center">
     <tr height="100%">
      <td height="100%" width="100%" valign="middle" align="center">
        We are launching soon!
      </td>
     </tr>
    </table>
  </div>
 </body>

Note:
It is either way fine if the <div> element (or <table>) scrolls with the website or not. Just want it to be centered when the page loads.

The easy way, if you have a fixed width and height:

#divElement{
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -50px;
    margin-left: -50px;
    width: 100px;
    height: 100px;
}

Please don't use inline styles! Here is a working example http://jsfiddle.net/S5bKq/.

With transforms being more ubiquitously supported these days, you can do this without knowing the width/height of the popup

.popup {
    position: fixed;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

Easy! JSFiddle here: http://jsfiddle.net/LgSZV/

Update: Check out https://css-tricks.com/centering-css-complete-guide/ for a fairly exhaustive guide on CSS centering. Adding it to this answer as it seems to get a lot of eyeballs.

Set the width and height and you're good.

div {
  position: absolute;
  margin: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 200px;
  height: 200px;
}

If you want the element dimensions to be flexible (and don't care about legacy browsers), go with XwipeoutX's answer.

Positioning <div> element at center of screen

Related

Recent Posts