What is style.css

The coding language that serves as the foundation for all web development? In CSS, the selector is written to the left of the first curly bracket. The information between curly brackets is called a declaration, and it contains properties and values that are applied to the selector. Properties are things like font size, color, and margins, while values are the settings for those properties.

The full bracketed set of. These same basic principles can be applied to change font sizes, background colors, margin indentations, and more. For instance. CSS code or Style Sheets can be external, internal, or inline. External style sheets are saved as. The prerelease task will generate CSS, run tests, check if the git index is dirty, and exit if there are any problems.

If all goes well, gh-release and npm publish will be run sequentially. Contributions welcome! Please read the contributing guidelines first. This module was rewritten after v0. Documents that include elements that set the style attribute but which don't define a default style sheet language are incorrect.

The syntax of the value of the style attribute is determined by the default style sheet language. For example, for [[CSS2]] inline style, use the declaration block syntax described in section 4. For optimal flexibility, authors should define styles in external style sheets. It is an error to render the content as part of the document's text. Some style sheet languages support syntax for hiding the content from non-conforming user agents. Some style sheet implementations may allow a wider variety of rules in the STYLE element than in the style attribute.

To specify that this style information should only apply to H1 elements of a specific class, we modify it as follows:. Finally, to limit the scope of the style information to a single instance of H1 , set the id attribute:.

When combined with style sheets, these elements allow users to extend HTML indefinitely, particularly when used with the class and id attributes. In the following example, we use the SPAN element to set the font style of the first few words of a paragraph to small caps. In the following example, we use DIV and the class attribute to set the text justification for a series of paragraphs that make up the abstract section of a scientific article. This style information could be reused for other abstract sections by setting the class attribute elsewhere in the document.

HTML allows authors to design documents that take advantage of the characteristics of the media where the document is to be rendered e. By specifying the media attribute, authors allow user agents to load and apply style sheets selectively. Please consult the list of recognized media descriptors.

The following sample declarations apply to H1 elements. When projected in a business meeting, all instances will be blue. When printed, all instances will be centered. Media control is particularly interesting when applied to external style sheets since user agents can save time by retrieving from the network only those style sheets that apply to the current device.

For instance, speech-based browsers can avoid downloading style sheets designed for visual rendering. See the section on media-dependent cascades for more information. HTML allows authors to associate any number of external style sheets with a document. The style sheet language defines how multiple external style sheets interact for example, the CSS "cascade" rules.

Authors may specify a number of mutually exclusive style sheets called alternate style sheets. Users may select their favorite among these depending on their preferences. For instance, an author may specify one style sheet designed for small screens and another for users with weak vision e. User agents should allow users to select from alternate style sheets.

The author may specify that one of the alternates is a preferred style sheet. User agents should apply the author's preferred style sheet unless the user has selected a different alternate. Authors may group several alternate style sheets including the author's preferred style sheets under a single style name. When a user selects a named style, the user agent must apply all style sheets with that name. User agents must not apply alternate style sheets with a different style name.

The section on specifying external style sheets explains how to name a group of style sheets. Authors may also specify persistent style sheets that user agents must apply in addition to any alternate style sheet. User agents must respect media descriptors when applying any style sheet. User agents should also allow users to disable the author's style sheets entirely, in which case the user agent must not apply any persistent or alternate style sheets.

Authors specify external style sheets with the following attributes of the LINK element:. User agents should provide a means for users to view and pick from the list of alternate styles. The value of the title attribute is recommended as the name of each choice.