HTML5: h1 – heading (level 1)

HTML 5: The Markup Language

h1 – heading (level 1) # T

The h1 through h6 elements are headings for the sections with which they are associated.

Content model #

h1 = (normal-character-data & common.elem.phrasing *) & h1.attrs

Attribute model #

h1.attrs = common.attrs

Assertions #

The “h1” element must not appear as a descendant of the “footer” element.
The “h1” element must not appear as a descendant of the “address” element.

Tag omission #

An h1 element must have both a start tag and an end tag.

Permitted contexts #

common.elem.flow
hgroup = (h1 | h2 | h3 | h4 | h5 | h6)+

Typical default display properties #

h1 {

display: block;

font-size: 2em;

margin: .67em 0 .67em 0;

font-weight: bold; }