H4 - Level-four Heading

The H4 element defines a level-four heading. This heading is more important than an H5 but less important than an H3.

Visual browsers typically render H4 in a bold font. Authors can suggest a presentation for H4 through style sheets. The following CSS ruleset suggests a presentation for all H4 elements:

h4 {
  margin-left: 6%;
  margin-right: 6%;
  font-weight: bold
}

Authors should not choose a heading level based on the font size commonly used by visual browsers. The heading level should be chosen based on the heading's importance and placement in the document. An H4 is typically used within a section headed by an H3.

More Information

• H4 in W3C HTML 4.0 Recommendation
• H4 in W3C HTML 3.2 Recommendation
• H4 in HTML 2.0 Standard
• H4 in WDG HTML 3.2 Reference
• H4 in Learning HTML 3.2 by Examples