Absolute positioning with centering margins

Hey there, I'm facing a little issue where I want to keep my footer at the bottom of the screen using position: absolute. But for some reason, the margin: auto that should center it on the screen isn't working as expected.

Here's the HTML snippet:

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv='Content-Type' content='Type=text/html; charset=utf-8'>
        <link rel="shortcut icon" href="../IMAGES/favicon.ico">
        <title>TEST</title>
        <link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro' rel='stylesheet' type='text/css'>
        <link rel="stylesheet" href="../css/stylesheet.css">
    </head>
    <body>
        <div id="header">
            <div id="logo">
                <img src="../IMAGES/logo.png" />
            </div>
            <div id="logotitel">
                The Ultimate "Ful-Ambi" Live Band from Greater Antwerp and Surroundings!
            </div>
        </div>
        <div id="nav">
            <div id="links">
                <a href="index.php"><div class="link">Home</div></a>
                <a href="wie.php"><div class="link">Who's Who</div></a>
                <a href="fotos.php"><div class="link">Photos</div></a>
                <a href="repertoire.php"><div class="link">Repertoire</div></a>
                <a href="links.php"><div class="link">Links</div></a>
                <a href="contact.php"><div class="link">Contact</div></a>
            </div>
        </div>
        <div class="clear"></div>
        <div id="content">
            TEST
        </div>
        <div class="clear"></div>
        <div id="footer">
            <div id="copy">
                Developed by Yoshi &copy vAntstAd
           </div>
       </div>
   </body>
</html>

CSS styles applied:

/* PAGE LAYOUT */
html
{
        padding: 0px;
        margin: 0px;
}

body
{
        background-image: url(../IMAGES/background.png);
        padding: 0px;
        margin: 0px;
        color: white;
        font-family: 'Source Sans Pro', serif, sans-serif;
}

.clear
{
        clear: both;
}

/* HEADER */
#header
{
        width: 1100px;
        height: 150px;
        background-color: #282828;
        margin: auto;
        border-bottom: solid;
        border-color: red;
}

#logo
{
        width: 283px;
        height: 100px;
        margin: auto;
}

#logotitel
{
        width: 1100px;
        height: 50px;
        line-height: 50px;
        text-align: center;
        font-size: x-large;
}

/* NAV */
#nav
{
        width: 1100px;
        height: 50px;
        margin-top: 25px;
        margin-right: auto;
        margin-left: auto;
        margin-bottom: 25px;
        background-color: red;
}

#links
{
        width: 600px;
        height: 50px;
        margin: auto;
}

.link
{
        width: 100px;
        height: 50px;
        line-height: 50px;
        float: left;
        text-align: center;
        color: white;
        text-decoration: none;
}

.link:hover
{
        color: #282828;
        text-decoration: underline;
}

/* CONTENT */

#content
{
        width: 1100px;
        height: auto;
        margin: auto;
        color: #282828;
        position: relative;
}

/* FOOTER */

#footer
{
        width: 1100PX;
        height: 50px;
        position: absolute;
        bottom: 0;
        margin: auto;
        background-color: #282828;
}

#copy
{
        width: auto;
        float: right;
        margin-right: 5px;
        height: 50px;
        line-height: 50px;
}
htmlcsspositionmargin

Answer №1

Knowing the width of the footer (1100px) allows you to easily center it using left:50%;margin-left:-550px.

For instance, here's how to center an absolutely positioned element:
http://jsfiddle.net/vdWQG/

In this case, the CSS for the footer would look like:

#footer
{
    width: 1100PX;
    height: 50px;
    position: absolute;
    bottom: 0;
    left:50%;           /* New line */
    margin-left:-550px; /* New line (half the width of #footer) */
    background-color: #282828;
}

If you prefer the element to stay fixed at the bottom of the page while scrolling, use position: fixed instead of position:absolute

Answer №2

If you want to have a footer positioned at the bottom and centered horizontally on your website, you can achieve this by using the following CSS code:

footer{
    width: 100%;
    max-width: 600px;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0 auto;
}

By applying this CSS, not only will the footer be centered horizontally, but it will also adapt responsively when the browser window is resized smaller than the footer itself.

For a demonstration of how this works, check out this example on Fiddle.

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