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::before

Expression Studio 4.0

Defines generated content that appears before an element.

Syntax

::before { sRules }

Possible values

sRules

String that specifies one or more Cascading Style Sheets (CSS) attribute/value pairs.

Remarks

The ::before and ::after pseudo-elements specify the location of content before and after an element in the document tree. The content attribute, in conjunction with these pseudo-elements, specifies what is inserted.

The generated content interacts with other boxes as if they were real elements inserted just inside their associated element. The content box of the associated element expands to include the generated content, if necessary.

Examples

The following style rules insert curly braces before and after each occurrence of H1 in the document tree.

H1:before {
    content: "{ ";
}
H1:after {
    content: " }";
}

Standards Information

This pseudo-class is defined in CSS Selectors Level 3 Gg721747.xtlink_newWindow(en-us,Expression.40).png.

Applies to

a, address, b, big, blockquote, body, br, button, caption, cite, code, dd, dfn, div, dl, dt, em, hn, i, img, input type=file, input type=image, input type=password, input type=text, kbd, label, legend, li, listing, marquee, menu, ol, p, plaintext, pre, s, samp, small, span, strike, strong, sub, sup, table, tbody, td, textarea, tfoot, th, thead, tr, tt, u, ul

See also

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