2016年5月18日 · As part of a conformance claim, people may use a conformance icon (or logo) on a Web site, on product packaging, in documentation, etc. For any of the guidelines documents, a conformance icon (chosen according to the appropriate conformance level) must link to the W3C explanation of the icon.

2020年10月15日 · W3C provides conformance logos for Web Content Accessibility Guidelines (WCAG) 2. Content providers can use these logos on their sites to indicate a claim of conformance to a specified conformance level of WCAG. Note that these logos do not represent review or validation of conformance by W3C and/or WAI.

W3C Web Accessibility Initiative (WAI) Strategies, standards, and supporting resources to make the Web accessible to people with disabilities.

When a user overrides font-family these icons typically disappear unless there is a means to identify them. The point is to provide a technique to differentiate icon fonts from general font (text) usage. Some low vision users need user stylesheets, scripts, or extensions to override the fonts on a page to perceive text content.

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wai-aria 是一项技术，它可以通过浏览器和一些辅助技术来帮助我们进一步地识别以及实现语义化，这样一来能帮助我们解决问题，也让用户可以了解发生了什么。

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2017年4月12日 · Functional images are used to initiate actions rather than to convey information. They are used in buttons, links, and other interactive elements. The text alternative for the image should convey the action that will be initiated (the purpose of the …