Compatible with multiple browsers
(M) Compatible with multiple browsers
Be sure your website is compatible with the most commonly used web browsers including Internet Explorer (versions 6+), FireFox, Opera, Chrome, and Safari.
Test pages on different browsers. Web pages that look good in Internet Explorer may look ugly in Opera or Safari.
Different web browsers can interpret the same HTML differently. Every time you make a change to a web page, view that page in Internet Explorer, Firefox, Opera, Netscape, and Chrome for Windows computers and in Safari, Firefox, Opera, Chrome, and Netscape for Mac computers. Also check the rendering of your website after upgrades of these browsers or the introduction of a new browser to make sure that your website is still compatible and that your web pages appear the way they should.
(Website Guidelines, pp. 120, 132, 141, 146)



