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HTML (Hypertext Markup Language) elements are usually either "block-level" elements or "inline" elements. A block-level element occupies the entire space of its parent element (container), thereby creating a "block." This article helps to explain what this means.

Browsers typically display the block-level element with a newline both before and after the element. You can visualize them as a stack of boxes. The following example demonstrates the block-level element's influence:

Block-level elements

HTML

<p>This paragraph is a block-level element; its background has been colored to display the paragraph's parent element.</p>

CSS

p { background-color: #8ABB55; }

Usage

  • Block-level elements may appear only within a <body> element.

Block-level vs. inline

There are a couple of key differences between block-level elements and inline elements:

Formatting
By default, block-level elements begin on new lines, but inline elements can start anywhere in a line.
Content model
Generally, block-level elements may contain inline elements and other block-level elements. Inherent in this structural distinction is the idea that block elements create "larger" structures than inline elements.

The distinction of block-level vs. inline elements is used in HTML specifications up  to 4.01. In HTML5, this binary distinction is replaced with a more complex set of content categories. The "block-level" category roughly corresponds to the category of flow content in HTML5, while "inline" corresponds to phrasing content, but there are additional categories.

Elements

The following is a complete list of all HTML block level elements (although "block-level" is not technically defined for elements that are new in HTML5).

<address>
Contact information.
<article> HTML5
Article content.
<aside> HTML5
Aside content.
<blockquote>
Long ("block") quotation.
<canvas> HTML5
Drawing canvas.
<dd>
Definition description.
<div>
Document division.
<dl>
Definition list.
<fieldset>
Field set label.
<figcaption> HTML5
Figure caption.
<figure> HTML5
Groups media content with a caption (see <figcaption>).
<footer> HTML5
Section or page footer.
<form>
Input form.
<h1>, <h2>, <h3>, <h4>, <h5>, <h6>
Heading levels 1-6.
<header> HTML5
Section or page header.
<hgroup> HTML5
Groups header information.
<hr>
Horizontal rule (dividing line).
<li>
List item.
<main>
Contains the central content unique to this document.
<nav>
Contains navigation links.
<noscript>
Content to use if scripting is not supported or turned off.
<ol>
Ordered list.
<output> HTML5
Form output.
<p>
Paragraph.
<pre>
Preformatted text.
<section> HTML5
Section of a web page.
<table>
Table.
<tfoot>
Table footer.
<ul>
Unordered list.
<video> HTML5
Video player.

See also

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 Last updated by: SphinxKnight,