Browser-Specific HTML Tags
ISSUE:
Some HTML tags are browser specific. Use of browser-specific tags may prevent page elements from being displayed or cause them to be displayed incorrectly by some browsers. Remember, people access Web pages using a variety of equipment and browsers. Test your Web pages with a variety of browsers you might be surprised to see how the page you designed for one browser looks when using another.
STANDARD:
- Do not use HTML constructs (tags) that are specific to (and only supported by) one browser.
- Use current HTML version specifications.