<...> is not approved by W3C

Cause:

The following tag is not a standard HTML tag. For most tags, the reason is that there is other ways to achieve the same result with standard tags or with cascaded style sheet.

Solution:

Replace the tag with the equivalent in standard HTML.

Sample:

<NOBR> is not approved by the W3C.

<NOBR> turns off wordwrapping between the start and end NOBR tag,

There are several ways to replace a NOBR by standard tag :
- You can use the nowrap attribute of the TR and TD tag in a table. In that case, the <BR> element to force line breaks where desired.

- The best solution is to use a cascaded style sheet with the attribute: "white-space: nowrap;".

BAD   <nobr>there is no wrapping here</nobr>
GOOD  <table><tr><td nowrap>there is no wrapping here</td></tr></table>
GOOD  <span style="white-space: nowrap;">there is no wrapping here</span>

References:

http://www.w3.org/TR/CSS1#white-space