Unicode and HTML with detectable errors. Currently, Gecko browsers such as Firefox, abide to this rule, whereas the bulk of the other common browsers that support HTML as XML, such as Webkit browsers (Chrome/Safari) do allow the encoding of XHTML documents to be manually overridden. Many browsers are only capable of displaying a small subset of the full Unicode repertoire. Here is how your browser displays various Unicode code points: Some web browsers, such as Mozilla Firefox, Opera, Safari and Internet Explorer (from version 7 on), are able to display multilingual web pages by intelligently choosing a font to display each individual character
Web Components are inside a template will not be fetched until the template is stamped out. HTML Templates are supported in Google Chrome, Mozilla Firefox, Microsoft Edge, Safari, and Opera. Support for an early version of Custom Elements and Shadow DOM, known as "v0", is present in some Blink-based browsers like Google Chrome and Opera and is in Mozilla Firefox (requires a manual configuration change). The newer Custom Elements and Shadow DOM "v1" APIs are being implemented in Safari 10, Google Chrome (53.0.2785), and under development in Mozilla Firefox. Microsoft Edge did not implement Custom Elements or Shadow DOM. Backward compatibility with