HTML: The Markup Language

asidetangential content NEW # T

The aside element represents content that is tangentially related to the content that forms the main textual flow of a document.

Permitted contents #

zero or more style elements, followed by flow content

Permitted attributes #

global attributes
Any attributes permitted globally.

Additional constraints and admonitions #

Tag omission #

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

Permitted parent elements #

any element that can contain flow elements

Details #

In printed documents, the type of tangential content that the aside element represents is sometimes formatted as a sidebar or annotation or footnote.

DOM interface #

Uses HTMLElement.

Typical default display properties #

aside {
display: block; }
aside {
font-size: 1.5em;
margin-before: 0.83em;
margin-after: 0.83em; }
aside, aside {
font-size: 1.17em;
margin-before: 1em;
margin-after: 1em; }
aside, aside, aside {
font-size: 1.00em;
margin-before: 1.33em;
margin-after: 1.33em; }
aside, aside, aside, aside {
font-size: .83em;
margin-before: 1.67em;
margin-after: 1.67em; }
aside, aside, aside, aside, aside {
font-size: .67em;
margin-before: 2.33em;
margin-after: 2.33em; }