HTML Styles — CSS

CSS saves a lot of work. It can control the layout of multiple web pages all at once.

CSS = Styles and Colors

What is CSS?

Cascading Style Sheets (CSS) is used to format the layout of a webpage.

With CSS, you can control the color, font, the size of text, the spacing between elements, how elements are positioned and laid out, what background images or background colors are to be used, different displays for different devices and screen sizes, and much more!

Tip: The word cascading means that a style applied to a parent element will also apply to all children elements within the parent. So, if you set the color of the body text to «blue», all headings, paragraphs, and other text elements within the body will also get the same color (unless you specify something else)!

Using CSS

CSS can be added to HTML documents in 3 ways:

• Inline — by using the style attribute inside HTML elements
• Internal — by using a element in the section
• External — by using a element to link to an external CSS file

The most common way to add CSS, is to keep the styles in external CSS files. However, in this tutorial we will use inline and internal styles, because this is easier to demonstrate, and easier for you to try it yourself.

Inline CSS

An inline CSS is used to apply a unique style to a single HTML element.

An inline CSS uses the style attribute of an HTML element.

The following example sets the text color of the element to blue, and the text color of the

element to red:

Example

A Blue Heading

Internal CSS

An internal CSS is used to define a style for a single HTML page.

An internal CSS is defined in the section of an HTML page, within a element.

The following example sets the text color of ALL the elements (on that page) to blue, and the text color of ALL the

elements to red. In addition, the page will be displayed with a «powderblue» background color:

Example

This is a heading

This is a paragraph.

External CSS

An external style sheet is used to define the style for many HTML pages.

To use an external style sheet, add a link to it in the section of each HTML page:

Example

This is a heading

This is a paragraph.

The external style sheet can be written in any text editor. The file must not contain any HTML code, and must be saved with a .css extension.

Here is what the «styles.css» file looks like:

«styles.css»:

Tip: With an external style sheet, you can change the look of an entire web site, by changing one file!

CSS Colors, Fonts and Sizes

Here, we will demonstrate some commonly used CSS properties. You will learn more about them later.

The CSS color property defines the text color to be used.

The CSS font-family property defines the font to be used.

The CSS font-size property defines the text size to be used.

Example

Use of CSS color, font-family and font-size properties:

This is a heading

This is a paragraph.

CSS Border

The CSS border property defines a border around an HTML element.

Tip: You can define a border for nearly all HTML elements.

Example

Use of CSS border property:

CSS Padding

The CSS padding property defines a padding (space) between the text and the border.

Example

Use of CSS border and padding properties:

CSS Margin

The CSS margin property defines a margin (space) outside the border.

Example

Use of CSS border and margin properties:

Link to External CSS

External style sheets can be referenced with a full URL or with a path relative to the current web page.

Example

This example uses a full URL to link to a style sheet:

Example

This example links to a style sheet located in the html folder on the current web site:

Example

This example links to a style sheet located in the same folder as the current page:

You can read more about file paths in the chapter HTML File Paths.

Chapter Summary

• Use the HTML style attribute for inline styling
• Use the HTML element to define internal CSS
• Use the HTML element to refer to an external CSS file
• Use the HTML element to store and elements
• Use the CSS color property for text colors
• Use the CSS font-family property for text fonts
• Use the CSS font-size property for text sizes
• Use the CSS border property for borders
• Use the CSS padding property for space inside the border
• Use the CSS margin property for space outside the border

Tip: You can learn much more about CSS in our CSS Tutorial.

HTML Exercises

HTML Style Tags

Tag	Description
	Defines style information for an HTML document
	Defines a link between a document and an external resource

For a complete list of all available HTML tags, visit our HTML Tag Reference.

Источник

: The Style Information element

The HTML element contains style information for a document, or part of a document. It contains CSS, which is applied to the contents of the document containing the element.

Try it

If you include multiple and elements in your document, they will be applied to the DOM in the order they are included in the document — make sure you include them in the correct order, to avoid unexpected cascade issues.

In the same manner as elements, elements can include media attributes that contain media queries, allowing you to selectively apply internal stylesheets to your document depending on media features such as viewport width.

Attributes

This element includes the global attributes.

This attribute defines which media the style should be applied to. Its value is a media query, which defaults to all if the attribute is missing.

A cryptographic nonce (number used once) used to allow inline styles in a style-src Content-Security-Policy. The server must generate a unique nonce value each time it transmits a policy. It is critical to provide a nonce that cannot be guessed as bypassing a resource’s policy is otherwise trivial.

This attribute specifies alternative style sheet sets.

This attribute explicitly indicates that certain operations should be blocked on the fetching of critical subresources. @import -ed stylesheets are generally considered as critical subresources, whereas background-image and fonts are not.

Deprecated attributes

This attribute should not be provided: if it is, the only permitted values are the empty string or a case-insensitive match for text/css .

Examples

A simple stylesheet

In the following example, we apply a very simple stylesheet to a document:

doctype html> html lang="en-US"> head> meta charset="UTF-8" /> title>Test pagetitle> style> p  color: red; > style> head> body> p>This is my paragraph.p> body> html> 

Result

Multiple style elements

In this example we’ve included two elements — notice how the conflicting declarations in the later element override those in the earlier one, if they have equal specificity.

doctype html> html lang="en-US"> head> meta charset="UTF-8" /> title>Test pagetitle> style> p  color: white; background-color: blue; padding: 5px; border: 1px solid black; > style> style> p  color: blue; background-color: yellow; > style> head> body> p>This is my paragraph.p> body> html> 

Result

Including a media query

In this example we build on the previous one, including a media attribute on the second element so it is only applied when the viewport is less than 500px in width.

doctype html> html lang="en-US"> head> meta charset="UTF-8" /> title>Test pagetitle> style> p  color: white; background-color: blue; padding: 5px; border: 1px solid black; > style> style media="all and (max-width: 500px)"> p  color: blue; background-color: yellow; > style> head> body> p>This is my paragraph.p> body> html> 

Result

Technical summary

Content categories	Metadata content, and if the scoped attribute is present: flow content.
Permitted content	Text content matching the type attribute, that is text/css .
Tag omission	Neither tag is omissible.
Permitted parents	Any element that accepts metadata content.
Implicit ARIA role	No corresponding role
Permitted ARIA roles	No role permitted
DOM interface	HTMLStyleElement

Specifications

Browser compatibility

BCD tables only load in the browser

See also

Found a content problem with this page?

This page was last modified on Jul 7, 2023 by MDN contributors.

Your blueprint for a better internet.

MDN

Support

Our communities

Developers

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998– 2023 by individual mozilla.org contributors. Content available under a Creative Commons license.

Источник

HTML Styles

The HTML style attribute is used to add styles to an element, such as color, font, size, and more.

Example

The HTML Style Attribute

Setting the style of an HTML element, can be done with the style attribute.

The HTML style attribute has the following syntax:

The property is a CSS property. The value is a CSS value.

You will learn more about CSS later in this tutorial.

Background Color

The CSS background-color property defines the background color for an HTML element.

Example

Set the background color for a page to powderblue:

This is a heading

This is a paragraph.

Example

Set background color for two different elements:

This is a heading

This is a paragraph.

Text Color

The CSS color property defines the text color for an HTML element:

Example

This is a heading

This is a paragraph.

Fonts

The CSS font-family property defines the font to be used for an HTML element:

Example

This is a heading

This is a paragraph.

Text Size

The CSS font-size property defines the text size for an HTML element:

Example

This is a heading

This is a paragraph.

Text Alignment

The CSS text-align property defines the horizontal text alignment for an HTML element:

Example

Centered Heading

Centered paragraph.

Chapter Summary

• Use the style attribute for styling HTML elements
• Use background-color for background color
• Use color for text colors
• Use font-family for text fonts
• Use font-size for text sizes
• Use text-align for text alignment

HTML Exercises

COLOR PICKER

Report Error

If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:

Thank You For Helping Us!

Your message has been sent to W3Schools.

Top Tutorials

Top References

Top Examples

Get Certified

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Источник