outline is your friend
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The CSS `outline` property is the best choice for focus styling because it doesn't affect layout, supports `outline-offset` for spacing, is fully customizable, and works correctly in forced color modes like Windows High Contrast Mode. Properties like `background-color` and `box-shadow` alone fail in forced color modes. A useful trick used by sites like gov.uk is combining `outline: 3px solid transparent` with `background-color`, ensuring visibility in both normal and forced color modes. Always test focus styles in forced color modes and avoid relying solely on non-outline properties.
Table of contents
outline is greatoutline sucksWhat about other properties?Transparent outlinesConclusion3 Impressions