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Re: [csswg-drafts] [css-variables?] Higher level custom properties that control multiple declarations (#5624)

From: Lea Verou via GitHub <sysbot+gh@w3.org>
Date: Tue, 03 Nov 2020 15:34:16 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-721202731-1604417655-sysbot+gh@w3.org>
@Awesomecloud Naming is typically decided at the end, all features are proposed with an implied "name to be bikeshedded".

The problem with such a generic conditional is — as usual — cycles.

Consider this:

.my-input {
	@if (env(width) > 768px) {
		width: 700px;

Also, with such generic expressions, there are ambiguities. E.g. what does `@if (calc(env(width) + env(height)) > 100%)` mean, since percentages mean different things in each property?

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