Alternative style sheets

The alternate stylesheets are commonly specified using a <link> element with rel="alternate stylesheet" and title="…" attributes. For example:

<link href="reset.css" rel="stylesheet" />

<link href="default.css" rel="stylesheet" title="Default Style" />
<link href="fancy.css" rel="alternate stylesheet" title="Fancy" />
<link href="basic.css" rel="alternate stylesheet" title="Basic" />

In this example, the styles "Default Style", "Fancy", and "Basic" will be listed in the Page Style submenu, with "Default Style" pre-selected. When the user selects a different style, the page will immediately be re-rendered using that style sheet.

No matter what style is selected, the rules from the reset.css stylesheet will always be applied.

Try a working example here.

Any stylesheet in a document falls into one of the following categories:

• Persistent (has rel="stylesheet", no title=""): always applies to the document.
• Preferred (has rel="stylesheet", with title="…" specified): applied by default, but disabled if an alternate stylesheet is selected. There can only be one preferred stylesheet, so providing stylesheets with different title attributes will cause some of them to be ignored.
• Alternate (rel="alternate stylesheet", with title="…" specified): disabled by default, can be selected.

When style sheets are referenced with a title attribute on the <link rel="stylesheet"> or <style> element, the title becomes one of the choices offered to the user. Style sheets linked with the same title are part of the same choice. Style sheets linked without a title attribute are always applied.

Use rel="stylesheet" to link to the default style, and rel="alternate stylesheet" to link to alternative style sheets. This tells the browser which style sheet title should be selected by default, and makes that default selection apply in browsers that do not support alternate style sheets.