This page explains how the Topics API works and how it can be used to create an interest-based advertising (IBA) solution....View this page on GitHub • Report a problem with this content...

The box-shadow CSS property adds shadow effects around an element's frame. You can set multiple effects separated by commas. A box shadow is described by X and Y offsets relative to the element, blur and spread radius, and color....View this page on GitHub • Report a problem with this content...

Les éléments HTML

à

représentent les six niveaux de titre de section.

correspond au niveau de section le plus haut et

correspond au niveau le plus faible....View this page on GitHub • Report a problem with this content...

L'élément HTML définit une cellule d'un tableau comme une cellule d'en-tête pour un groupe de cellules. La nature de ce groupe est définie grâce aux attributs scope et headers....View this page on GitHub • Report a problem with this content...

L'attribut booléen disabled, lorsqu'il est présent, rend l'élément non mutable, non focusable, ou même non soumis avec le formulaire. L'utilisateur ne peut ni modifier ni cibler le contrôle, ni les descendants du contrôle de formulaire. Si l'attribut disabled est spécifié sur un contrôle de formulaire, l'élément et ses descendants de contrôle de formulaire ne participent pas à la validation des contraintes. Souvent, les navigateurs grisent ces contrôles et ils ne reçoivent aucun événement de navigation, comme les clics de souris ou les événements liés au focus....View this page on GitHub • Report a problem with this content...

The CSS data type represents well-defined constants such as e and pi. Rather than require authors to manually type out several digits of these mathematical constants or calculate them, a few of them are provided directly by CSS for convenience....View this page on GitHub • Report a problem with this content...

Those of us who have been doing web development for more years than we care to remember might consider that CSS grid is a little bit like using "tables for layout". Back in the early days of web design, the way we constructed page layout was to use HTML tables, then fragment our design into the cells of those tables in order to create a layout. This had some advantages over the "CSS Positioning" that came afterwards, in that we could take advantage of the alignment and full height columns offered by table display. The biggest downside however was that it tied our design to the markup, often creating accessibility issues as it did so. In order to lay the design out in the table we often broke up the content in ways that made no sense at all when read out by a screen reader for example....View this page on GitHub • Report a problem with this content...

The @import CSS at-rule is used to import style rules from other valid stylesheets. An @import rule must be defined at the top of the stylesheet, before any other at-rule (except @charset and @layer) and style declarations, or it will be ignored....View this page on GitHub • Report a problem with this content...

Feature queries are a useful tool for progressively enhancing a site. They enable you to provide a good solution for all browsers, and an enhanced solution for browsers that support newer properties and values....View this page on GitHub • Report a problem with this content...

The CSS data type represents the algorithm used for interpolation between values. The interpolation method specifies how to find a midpoint between two hue values based on a color wheel. It is used as a component of the data type....View this page on GitHub • Report a problem with this content...