72f385ecc0
This is a internal-only syntax for guarding rules from a boolean
preference. Nothing causes @supports rules to be re-evaluated except
html.css registered in Part 2.
This is needed for rendering the disclosure triangle of the
summary element by using "display: list-item".
Usage example:
@supports -moz-bool-pref("dom.details_element.enabled") {
/* css rules */
}
MozReview-Commit-ID: HDCa8zHxYTA
21 lines
533 B
HTML
21 lines
533 B
HTML
<!DOCTYPE html>
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<!-- Any copyright is dedicated to the Public Domain.
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- http://creativecommons.org/publicdomain/zero/1.0/ -->
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<html>
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<style>
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/* This is not a user agent style sheet, so the style will be ignored.
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"testing.supports.moz-bool-pref" is set to true in
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layout/tools/reftest/reftest-preferences.js. */
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@supports -moz-bool-pref("testing.supports.moz-bool-pref") {
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p {
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background-color: red;
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}
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}
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</style>
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<body>
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<p>This text should not have background color.</p>
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</body>
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</html>
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