Quick `tabindex` Cheatsheet
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The tabindex attribute controls an element’s focus behavior:
tabindex="0": The element is reachable via keyboard navigation, and its order is determined by the document’s source order.tabindex="-1": The element is not reachable by keyboard navigation but can be focused programmatically with JavaScript.
Positive values, like tabindex="1", are technically valid but strongly discouraged, as they often disrupt the logical navigation order.