HTML and CSS Reference
In-Depth Information
marquee
blink
xmp
basefont
bgsound
keygen
sound
spacer
app
comment
htmlplus
layer
hype
wbr
This isn't an exhaustive list. There was a time when browser vendors were competing in terms of how many
weird tags they could add to HTML. A surprising number of those are still floating around unnoticed on web
pages.
A few of these may still work in some browsers. For instance, Firefox supports both
marquee
and
blink
.
However, neither scrolling nor blinking text is a good idea in the first place. These elements were left out of the
official HTML specs for good reason, and you should leave them out of your sites, too. You may want to look at
individual occurrences to see what more static styles you might replace these with.
xmp
is another bogon that may actually have a
raison d'être
on your site, especially if the site is dedicated to
HTML tutorials or markup languages. It functions much like an XML CDATA section. That is, it interprets
everything inside the text as plain text, not markup. You could replace
<xmp>
with
<![CDATA[
and
</xmp>
with
]]>
. However, legacy browsers don't recognize CDATA sections, so you're better off just removing the
xmp
tags
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