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A browser supporting only OpenType fonts with CFF outlines or Embedded OpenType fonts could support the CSS standard, but fail the test in the Acid3 test. The glyph , when rendered by the downloaded font, is just a square, made white with CSS, and thus invisible.
Acid2 is a webpage that test web browsers' functionality in displaying aspects of HTML markup, CSS 2.1 styling, PNG images, and data URIs.The test page was released on 13 April 2005 by the Web Standards Project.
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]
Web Compatibility Test for Mobile Browsers, often called the Mobile Acid test, [1] despite not being a true Acid test, [2] is a test page published and promoted by the World Wide Web Consortium (W3C) to expose web page rendering flaws in mobile web browsers and other applications that render HTML. [3]
Example of a failed Acid1 test Easter egg in Internet Explorer 5 for Mac. Acid1, originally called the Box Acid Test, is a test page for web browsers.It was developed in October 1998 and was important in establishing baseline interoperability between early web browsers, especially for the Cascading Style Sheets 1.0 specification.
Modernizr uses feature detection, rather than checking the browser's property, to discern what a browser can and cannot do. It considers feature detection more reliable since the same rendering engine may not necessarily support the same things in two different browsers using that engine.
Tag certifying that a website has been checked for well-formed XHTML (above) and CSS (below) markup The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition (DTD).
A CSS hack is a coding technique used to hide or show CSS markup depending on the browser, version number, or capabilities. Browsers have different interpretations of CSS behavior and different levels of support for the W3C standards. CSS hacks are sometimes used to achieve consistent layout appearance in multiple browsers that do not have ...