Introduction to CSS3 – Part 5: Multiple Columns
Multiple columns are a major facet of laying out text – newspapers have used them for decades. So important are they that it is amazing that the current way to achieve a multi column layout is one of the most complex techniques for a new designer to grasp.
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CSS3 introduces a new module known, appropriately, as multi-column layout. It allows you to specify how many columns text should be split down into and how they should appear. As usual, examples can be found below:
Multiple columns using CSS3
At present, this feature is available in Firefox and Safari 3. When the module becomes finalised in the CSS3 specification it will be adopted by other browsers and rolled into their updates.
There are four properties which relate to the multiple column layout in CSS3, allowing you to set the number of columns, width, gap between each column and a border between each:
At present, a browser specific selector is also needed to identify whether Safari or Firefox should display the selector. The code to be used to create a two column layout with a 1px rule between columns would be:
-moz-column-rule: 1px solid #ddccb5;
-webkit-column-rule: 1px solid #ddccb5;
It could also be the case that you would like an element to span more than one column – a heading, table or image for instance. This is facilitated in the specification through the use of:
Numbers can also be used to allow the element to span a certain number of columns. At present this feature isn’t implemented in any major browsers, but should provide much needed additional flexibility when designing around this feature. It would allow you to achieve effects such as:
In the meantime
Multiple column layout will save a huge headache for many designers, allowing greater control of how copy is displayed. You can read the full specification for multi-column at the W3 site if you’d like more information about the feature.
The next, and final, article in this series will be looking at the different background features available in CSS3 including using more than one background for an element, and specifying the size of backgrounds. Remember, to see live examples of these features, take a look at our CSS3 example page.