a11yTips — Visually highlight interface components when they…

Visually highlight interface components when they receive focus

no. 042

Make sure active elements are highlighted when they receive keyboard focus

Users who can’t use a mouse for whatever reason will often navigate through a page using their keyboard’s tabulation key, jumping from one active element to another (form controls, links and so on), based on source code order. Focus is generally displayed as a blinking vertical bar at the insertion point in text field, or as a dotted focus highlight rectangle on a link. This focus indicator needs to be easily noticeable, so progression through content can be effortlessly followed.

To do [...]

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