h1

• Description
• Syntax
• Examples
• Links

The h1 element for HTML represents a heading for the section with which it is associated.

<h1 attribute-name="attribute-value"></h1>

Global

h1
{
    display: block;
    font-size: 2em;
    font-weight: bold;
    margin: .67em 0 .67em 0;
}

• h2
• h3
• h4
• h5
• h6

• !doctype
• a
• abbr
• address
• area
• article
• aside
• audio
• b
• base
• bdi
• bdo
• blockquote
• body
• br
• button
• canvas
• caption
• cite
• code
• col
• colgroup
• data
• datalist
• dd
• del
• details
• dfn
• dialog
• div
• dl
• dt
• em
• embed
• fieldset
• figcaption
• figure
• footer
• form
• h2
• h3
• h4
• h5
• h6
• head
• header
• hgroup
• hr
• html
• i
• iframe
• img
• input
• ins
• kbd
• label
• legend
• li
• link
• main
• map
• mark
• menu
• meta
• meter
• nav
• noscript
• object
• ol
• optgroup
• option
• output
• p
• param
• picture
• pre
• progress
• q
• rb
• rp
• rt
• rtc
• ruby
• s
• samp
• script
• search
• section
• select
• slot
• small
• source
• span
• strong
• style
• sub
• summary
• sup
• table
• tbody
• td
• template
• textarea
• tfoot
• th
• thead
• time
• title
• tr
• track
• u
• ul
• var
• video
• wbr

• Web Hypertext Application Technology Working Group (WHATWG)