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HTML Tag

Specify a default URL and a default target for all links on a page:

Definition and Usage

The tag specifies the base URL and/or target for all relative URLs in a document.

The tag must have either an href or a target attribute present, or both.

There can only be one single element in a document, and it must be inside the element.

Browser Support

Attributes

Attribute	Value	Description
href	URL	Specifies the base URL for all relative URLs in the page
target	_blank _parent _self _top	Specifies the default target for all hyperlinks and forms in the page

Global Attributes and Events

Event Attributes

The tag does not support any event attributes.

Related Pages

Default CSS Settings

COLOR PICKER

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HTML Атрибут default

Атрибут default используется по умолчанию, логический атрибут.

Когда default присутствует, он указывает, что трек должен быть включен, если предпочтения пользователя не указывается, на другой трек.

Примечание: Должно быть не более одного атрибута default в элементе track , для каждого элемента media .

Применение

Атрибут default можно использовать для следующего элемента:

Пример

Пример

Видео с двумя дорожками субтитров. «Английский» субтитры по умолчанию:

Поддержка браузеров

Числа в таблице указывают первую версию браузера, которая полностью поддерживает атрибут.

Атрибут
default	18.0	10.0	31.0	6.0	15.0

HTML Атрибут default

Мы только что запустили
SchoolsW3 видео

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CSS Default Values Reference

The table below shows the default CSS browser values for all HTML elements.

Element	Default CSS Value	Try it
a:link	color: (internal value); text-decoration: underline; cursor: auto;	Try it »
a:visited	color: (internal value); text-decoration: underline; cursor: auto;	Try it »
a:link:active	color: (internal value);	Try it »
a:visited:active	color: (internal value);	Try it »
abbr	None.
address	display: block; font-style: italic;	Try it »
area	display: none;
article	display: block;
aside	display: block;
audio	None.
b	font-weight: bold;	Try it »
base	None.
bdi	None.
bdo	unicode-bidi: bidi-override;
blockquote	display: block; margin-top: 1em; margin-bottom: 1em; margin-left: 40px; margin-right: 40px;	Try it »
body	display: block; margin: 8px;	Try it »
body:focus	outline: none;	Try it »
br	None.
button	None
canvas	None.
caption	display: table-caption; text-align: center;	Try it »
cite	font-style: italic;	Try it »
code	font-family: monospace;	Try it »
col	display: table-column;	Try it »
colgroup	display: table-column-group	Try it »
datalist	display: none;
dd	display: block; margin-left: 40px;	Try it »
del	text-decoration: line-through;	Try it »
details	display: block;
dfn	font-style: italic;	Try it »
dialog	None.
div	display: block;	Try it »
dl	display: block; margin-top: 1em; margin-bottom: 1em; margin-left: 0; margin-right: 0;	Try it »
dt	display: block;	Try it »
em	font-style: italic;	Try it »
embed:focus	outline: none;
fieldset	display: block; margin-left: 2px; margin-right: 2px; padding-top: 0.35em; padding-bottom: 0.625em; padding-left: 0.75em; padding-right: 0.75em; border: 2px groove (internal value);	Try it »
figcaption	display: block;
figure	display: block; margin-top: 1em; margin-bottom: 1em; margin-left: 40px; margin-right: 40px;	Try it »
footer	display: block;
form	display: block; margin-top: 0em;	Try it »
h1	display: block; font-size: 2em; margin-top: 0.67em; margin-bottom: 0.67em; margin-left: 0; margin-right: 0; font-weight: bold;	Try it »
h2	display: block; font-size: 1.5em; margin-top: 0.83em; margin-bottom: 0.83em; margin-left: 0; margin-right: 0; font-weight: bold;	Try it »
h3	display: block; font-size: 1.17em; margin-top: 1em; margin-bottom: 1em; margin-left: 0; margin-right: 0; font-weight: bold;	Try it »
h4	display: block; margin-top: 1.33em; margin-bottom: 1.33em; margin-left: 0; margin-right: 0; font-weight: bold;	Try it »
h5	display: block; font-size: .83em; margin-top: 1.67em; margin-bottom: 1.67em; margin-left: 0; margin-right: 0; font-weight: bold;	Try it »
h6	display: block; font-size: .67em; margin-top: 2.33em; margin-bottom: 2.33em; margin-left: 0; margin-right: 0; font-weight: bold;	Try it »
head	display: none;
header	display: block;
hr	display: block; margin-top: 0.5em; margin-bottom: 0.5em; margin-left: auto; margin-right: auto; border-style: inset; border-width: 1px;	Try it »
html	display: block;
html:focus	outline: none;
i	font-style: italic;	Try it »
iframe:focus	outline: none;
iframe[seamless]	display: block;
img	display: inline-block;	Try it »
input	None.
ins	text-decoration: underline;	Try it »
kbd	font-family: monospace;	Try it »
label	cursor: default;	Try it »
legend	display: block; padding-left: 2px; padding-right: 2px; border: none;	Try it »
li	display: list-item;
link	display: none;
main	None.
map	display: inline;
mark	background-color: yellow; color: black;	Try it »
menu	display: block; list-style-type: disc; margin-top: 1em; margin-bottom: 1em; margin-left: 0; margin-right: 0; padding-left: 40px;
menuitem	None.
meta	None.
meter	None.
nav	display: block;
noscript	None.
object:focus	outline: none;
ol	display: block; list-style-type: decimal; margin-top: 1em; margin-bottom: 1em; margin-left: 0; margin-right: 0; padding-left: 40px;	Try it »
optgroup	None.
option	None.
output	display: inline;
p	display: block; margin-top: 1em; margin-bottom: 1em; margin-left: 0; margin-right: 0;	Try it »
param	display: none;
picture	None.
pre	display: block; font-family: monospace; white-space: pre; margin: 1em 0;	Try it »
progress	None.
q	display: inline;	Try it »
q::before	content: open-quote;	Try it »
q::after	content: close-quote;	Try it »
rp	None.
rt	line-height: normal;
ruby	None.
s	text-decoration: line-through;	Try it »
samp	font-family: monospace;	Try it »
script	display: none;
section	display: block;	Try it »
select	None.
small	font-size: smaller;	Try it »
source	None.
span	None.
strike	text-decoration: line-through;	Try it »
strong	font-weight: bold;	Try it »
style	display: none;
sub	vertical-align: sub; font-size: smaller;	Try it »
summary	display: block;
sup	vertical-align: super; font-size: smaller;	Try it »
table	display: table; border-collapse: separate; border-spacing: 2px; border-color: gray;	Try it »
tbody	display: table-row-group; vertical-align: middle; border-color: inherit;
td	display: table-cell; vertical-align: inherit;
template	None.
textarea	None.
tfoot	display: table-footer-group; vertical-align: middle; border-color: inherit;
th	display: table-cell; vertical-align: inherit; font-weight: bold; text-align: center;
thead	display: table-header-group; vertical-align: middle; border-color: inherit;
time	None.
title	display: none;
tr	display: table-row; vertical-align: inherit; border-color: inherit;
track	None.
u	text-decoration: underline;	Try it »
ul	display: block; list-style-type: disc; margin-top: 1em; margin-bottom: 1 em; margin-left: 0; margin-right: 0; padding-left: 40px;	Try it »
var	font-style: italic;	Try it »
video	None.
wbr	None.

Источник

tag in HTML

in HTML is the parent tag, that contains each and every element tags of the HTML document inside of it, except for the tag. It is also known as the root element. You can only use one pair of opening and closing tags.

• Categories: None.
• Contexts in which this element can be used: As the document’s document element.
  Wherever a subdocument framework is allowed in a compound document.
• Content model: A element followed by a element.
• Tag omission in text/html: The start tag can be omited, if the first thing inside the element is not a comment.
  The end tag can be omited too, if the element is not immediately followed by a comment.
• Content attributes: Global attributes.
  manifest — Application cache manifest (Depreciated later)
• Allowed ARIA role attribute values: None
• Allowed ARIA state and property attributes: None
• DOM Interface: interface HTMLHtmlElement:HTMLElement<>;

Note:
For more details, please refer the spec reference given below, in the Source heading.

Syntax

Note:
The contents inside of the tag can only be and tag.
is always outside of the container.

Use of the tag

     
Hello there!!
 
This is a sample paragraph!!
   

Browser support

Note:
Since this is an essential part of the HTML document, every browser will support the tag by default.

Attributes

Note:
tag also supports the global attributes.

• manifest * — Has the URI of the .appcache file, which has the list of files that should be cached locally, for offline use. It’s use has been discouraged, and instead, replaced with service workers.

• version * — Specifies about the version of the HTML, that is being used. Has been replaced with the tag.

Warning!:
Don’t use this tag, by any means! This attribute is very much outdated, and has only been added for the sake of understanding. It has been removed from almost every browser, from the version 4.01 specification. Use for specifying the version of the HTML document.

• xmlns — This attribute is used to define the namespace for the XML of the given document. This is a must for documents that parse with XML parsers, and is optional for text/html documents. The default value is http://www.w3.org/1999/xhtml. Do note that this is only if you want to conform to XHTML standards.

* these attributes are not supported/ to be removed by any major browsers.

Note:
Use of lang attribute is encouraged for identifying the language, and thus, this can help the screen readers to determine the proper language to speak in.
Failure to do so may result in mispronunciation.
This also makes sure that the metadata, like , or is announced properly.

CSS default properties

Note:
This can vary for different browsers. To check the exact default attributes, create an HTML file with just the and tags, and execute it in the preferred browser. Then, proceed to the developer tools(F12 is the universal shortcut for any desktop browser, but there are other shortcuts like Ctrl + Shift + I on Windows or Cmd + Opt + I on Mac), and check the properties of the tag.
This same method can be tried on any other tags too, but care must be taken that no CSS properties (including inline, internal and external types) are added.
The and tags were added automatically in this document, you can ignore them.
Warning!:
Do remember that tags can inherit properties, and so it would be in the best to define a tag without the outer parent element!!

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