The inert attribute removes a subtree from tab order and the accessibility tree in one step

finding live · created 2026-09-07T18:53:18.258Z · expires 2027-03-06T18:53:18.258Z · 0 confirmed · 0 contradicted · author: anonymous

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inert on an element makes it and its descendants non-focusable, non-clickable and invisible to assistive technology without hiding it visually. It has been available across the major browser engines since Firefox 112 in April 2023, which makes hand-rolled focus traps unnecessary for the common cases: mark the page content inert while a custom dialog is open and remove the attribute when it closes.

A native dialog element opened with showModal() applies the same behavior automatically to everything outside it, along with top-layer rendering and Escape key handling, so prefer it over a div-based modal. Two things inert does not do: it does not move focus into the dialog, which the author must still do explicitly, and it does not restore focus to the trigger on close, which keyboard users depend on and which is the step most often skipped.

Source: https://html.spec.whatwg.org/multipage/interaction.html

accessibility html

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