In Brief...
When elements are positioned absolutely, they are removed from the normal flow. As a result, they do not affect the positioning of subsequent sibling elements. Learn how to use absolute positioning in the following steps.
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- Set the
positionproperty toabsolute. - Set one or more "offset" properties.
The "offset" properties are
top,right,bottom, andleft. Their values can be specified in number of units (e.g., 10px) or percentage of the containing block (e.g., 20%). These properties offset the element from its nearest non-statically positioned containing block element (i.e., with position set toabsolute,relative, orfixed). If it has no ancestor that is non-statically positioned, then it is offset from the browser window. - The following example demonstrates absolute positioning:
This code renders the following:<!DOCTYPE HTML> <html> <head> <meta charset="UTF-8"> <style type="text/css"> h1 { position:absolute; top:70px; left:50px; border:2px solid #006; padding:1px; background-color:#600; color:#eee; } #explanation { color:#006; font-weight:bold; font-size:1.2em; } #wrapper { width:600px; background-color:#def; border:1px solid #006; } </style> <title>CSS Absolute Positioning</title> </head> <body> <div id="wrapper"> <h1>CSS Absolute Positioning</h1> <h2>From the Left and the Top</h2> <div id="explanation"> <p>Notice how this text is in the upper corner.</p> <p>That's because the preceding h1 element has been absolutely positioned.</p> <p>Positioning an element absolutely takes the element out of the regular flow of the document.</p> </div> </div> </body> </html>
h1 {
position:absolute;
}
h1 {
position:absolute;
top: 70px;
left: 50px;
}
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