Elements and Valid DTDs They May Appear In
The table below lists the W3C-defined element types and states which HTML/XHTML doctype declarations (DTDs) each of these elements may appear in.
| Element | HTML 2.0 | HTML 3.2 | HTML 4.01 Transitional | HTML 4.01 Frameset | HTML 4.01 Strict | XHTML 1.0 Transitional | XHTML 1.0 Frameset | XHTML 1.0 Strict |
|---|---|---|---|---|---|---|---|---|
| a | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| abbr | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| acronym | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| address | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| applet | No | Yes | Yes | Yes | No | Yes | Yes | No |
| area | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| b | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| base | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| basefont | No | Yes | Yes | Yes | No | Yes | Yes | No |
| bdo | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| big | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| blockquote | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| body | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| br | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| button | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| caption | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| center | No | Yes | Yes | Yes | No | Yes | Yes | No |
| cite | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| code | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| col | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| colgroup | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| dd | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| del | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| dfn | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| dir | Yes | Yes | Yes | Yes | No | Yes | Yes | No |
| div | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| dl | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| dt | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| em | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| fieldset | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| font | No | Yes | Yes | Yes | No | Yes | Yes | No |
| form | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| frame | No | No | No | Yes | No | No | Yes | No |
| frameset | No | No | No | Yes | No | No | Yes | No |
| h1 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| h2 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| h3 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| h4 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| h5 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| h6 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| head | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| hr | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| html | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| i | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| iframe | No | No | Yes | Yes | No | Yes | Yes | No |
| img | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| input | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| ins | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| isindex | Yes | Yes | Yes | Yes | No | Yes | Yes | No |
| kbd | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| label | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| legend | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| li | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| link | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| map | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| menu | Yes | Yes | Yes | Yes | No | Yes | Yes | No |
| meta | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| nextid | Yes | No | No | No | No | No | No | No |
| noframes | No | No | Yes | Yes | No | Yes | Yes | No |
| noscript | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| object | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| ol | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| optgroup | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| option | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| p | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| param | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| pre | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| q | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| s | No | No | Yes | Yes | No | Yes | Yes | No |
| samp | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| script | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| select | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| small | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| span | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| strike | No | Yes | Yes | Yes | No | Yes | Yes | No |
| strong | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| style | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| sub | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| sup | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| table | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| tbody | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| td | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| textarea | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| tfoot | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| th | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| thead | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| title | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| tr | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| tt | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| u | No | Yes | Yes | Yes | No | Yes | Yes | No |
| ul | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| var | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
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