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[2] [3] Leaving attribute values unquoted is considered unsafe. [4] Although most attributes are provided as paired names and values, some affect the element simply by their presence in the start tag of the element [5] (like the ismap attribute for the img element [6]). The abbreviation element, abbr, can be used to demonstrate these various ...
Only the CSS method is supported in HTML5; the attribute is deprecated in HTML 3.2 and 4.01. CSS also provides none , and the ability to replace these bullets with custom images. UL existed in HTML Tags , and was standardized in HTML 2.0 ; still current.
CSS does not just apply to visual styling: when spoken out loud by a voice browser, CSS styling can affect speech-rate, stress, richness and even position within a stereophonic image. For these reasons, and in support of a more semantic web, attributes attached to elements within HTML should describe their semantic purpose, rather than merely ...
basefont (Deprecated. use CSS instead.) Presentation related attributes. background (Deprecated. use CSS instead.) and bgcolor (Deprecated. use CSS instead.) attributes for body (required element according to the W3C.) element. align (Deprecated. use CSS instead.) attribute on div, form, paragraph (p) and heading (h1...h6) elements
Use of proprietary or undefined elements and attributes instead of those defined in W3C recommendations. For example the use of the Blink element or the Marquee element which were non-standard elements originally only supported by Netscape and Internet Explorer browsers respectively.
A link relation is a descriptive attribute attached to a hyperlink in order to define the type of the link, or the relationship between the source and destination resources. The attribute can be used by automated systems, or can be presented to a user in a different way. In HTML these are designated with the rel attribute on link, a, or area ...
An example of alt attribute text being displayed in place of an unavailable image, with the underlying HTML displayed below it The Wikipedia article for Wolf on the Lynx web browser, displaying the text of the alt attribute in orange in place of the images. The text in the alt attribute is used to replace the image when the image cannot be ...
CACHE MANIFEST /test.css /test.js /test.png This manifest file lists three resources: a CSS file, a JavaScript file and a PNG image. When the above file is loaded, the browser will download the test.css, test.js and test.png files from the root directory in the web server. [7]