- header
- nav
- main
- article
- section
- form
- footer
- aside
- h1 ... h6
- p
- strong
- span
- table
- tr
- th
- td
- tr
- ul/ol
- li
- input/label
- img
- a
- img > alt
- section/div/any > aria-label/role, title
- tab key > tab-index (defines the sequence the tab key should follow)
<meta name="keywords" content="example, html, meta, tags, accessibility, bla, bla" />
<meta name="robots" content="noindex, nofollow" />
<meta name="robots" content="index, follow" />
ways to validate html: