What it means in plain language
An HTML tag is a syntax element used to specify the structure, meaning, or behavior of a portion of a web document.
Where it genuinely helps
An HTML tag marks a document element and role, helping browsers, search engines and screen readers understand content.
What to decide before acting
Choose an element for meaning and behaviour rather than appearance; interactions need native keyboard and state handling.
How to tell whether it works
Validate nesting, accessible names, focus order, duplicate identifiers and the final DOM after scripts run.
