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CSS: !important est vraiment à proscrire #22

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YannisDelmas opened this issue Feb 2, 2022 · 2 comments
Open

CSS: !important est vraiment à proscrire #22

YannisDelmas opened this issue Feb 2, 2022 · 2 comments

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@YannisDelmas
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YannisDelmas commented Feb 2, 2022 •
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Universellement reconnu comme une mauvaise pratique: il FAUT s'en passer quand c'est possible, c'est à dire presque toujours.

https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity
@YannisDelmas
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"By default, rules in author style sheets have more weight than rules in user style sheets. Precedence is reversed, however, for "!important" rules. All user and author rules have more weight than rules in the UA's default style sheet." [CSS 2.1, §6.4]

L'objectif est: "CSS attempts to create a balance of power between author and user style sheets." [CSS 2.1, §6.4.2] Donc, l'usage de "!important" devrait être limité aux feuilles de style utilisateur, donc aux dispositifs d'accessibilité.

@YannisDelmas
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Justifications pratiques:

  1. ça rend la maintenance difficile: très dur à surcharger.
  2. ça casse les règles de spécificité

@YannisDelmas YannisDelmas mentioned this issue Feb 2, 2022
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@YannisDelmas YannisDelmas changed the title CSS : !important est vraiment à proscrire CSS: !important est vraiment à proscrire Feb 2, 2022
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