HTML and CSS Reference
Alphabetical List of Elements
This section contains a list of all elements and attributes in HTML and the living HTML doc-
ument at WHATWG. Readers are advised to watch for these labels on elements and attributes:
Attributesmarkedas Required mustbeincludedintheelementforthemarkuptobevalid.
W3C HTML5 only
Elements and attributes marked W3C HTML5 only appear only in the W3C HTML5
Candidate Recommendation and do not appear in the HTML5.1 Editor's Draft or
Elements and attributes marked WHATWG only appear only in the living HTML spe-
cification maintained by the WHATWG and are not part of the W3C Recommendation.
Not in HTML 4.01
Elements and attributes marked Not in HTML 4.01 are new in HTML5 and will cause
documents using the HTML 4.01, XHTML1.0, and XHTML 1.1 DOCTYPEs to be inval-
Attributes marked XHTML only apply only to documents written in XHTML (XML)