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The Cascading Style Sheets (CSS) specification describes how elements of web pages are displayed by graphical browsers. Section 4 of the CSS1 specification defines a "formatting model" that gives block-level elements—such as p and blockquote—a width and height, and three levels of boxes surrounding it: padding, borders, and margins. [4]
Bootstrap (formerly Twitter Bootstrap) is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains HTML , CSS and (optionally) JavaScript -based design templates for typography , forms , buttons , navigation , and other interface components.
in CSS level E: an element of type E: 1 E: link: an E element that is the source anchor of a hyperlink whose target is either not yet visited (:link) or already visited (:visited) 1 E: active: an E element during certain user actions: 1 E:: first-line: the first formatted line of an E element: 1 E:: first-letter: the first formatted letter of ...
For each skin, the user can make various choices regarding fonts, colors, positions of links in the margin, etc. CSS is specified with reference to selectors : HTML elements, classes, and ID's specified in the HTML code. Accordingly, what the possibilities are for each skin can be seen by looking at the HTML source code of a page, in particular ...
A list of options for use in form elements. Standardized in HTML5. <fieldset>...</fieldset> A container for adding structure to forms. For example, a series of related controls can be grouped within a <fieldset>, which can then have a <legend> added in order to identify their function. Standardized in HTML 4.0; still current. <input />
Some early versions of Netscape used the HTML link tag to construct a navigation bar to navigate websites. [5] Today, the nav tag can be used for the same purpose. [6] In HTML5, navigation elements are enclosed in a <nav> tag, often, containing a list of links.
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues in search engine optimization by specifying the "canonical" or "preferred" version of a web page. It is described in RFC 6596, which went live in April 2012.
JavaScript (/ ˈ dʒ ɑː v ə s k r ɪ p t /), often abbreviated as JS, is a programming language and core technology of the Web, alongside HTML and CSS. 99% of websites use JavaScript on the client side for webpage behavior. [10] Web browsers have a dedicated JavaScript engine that executes the client code.