[VE][76] Error Message Feedback

From: http://www.argentinauniversal.com/actual0405.html

What does it means? I put in red the correction. It is the same as used.

/Line 167 
<http://validator.w3.org/check?uri=http%3A%2F%2Fwww.argentinauniversal.com%2Fabril05%2Factual0405.html&charset=%28detect+automatically%29&doctype=Inline&ss=1&sp=1&No200=1&verbose=1#line-167>, 
column 56/: element "MARQUEE" undefined

|...="2" class="text" height="2">*<marquee*>** <!-- #BeginLibraryItem 
"/Library/frase|

You have used the element named above in your document, but the document 
type you are using does not define an element of that name. This error 
is often caused by incorrect use of the "Strict" document type with a 
document that uses frames (e.g. you must use the "Frameset" document 
type to get the "<frameset>" element), or by using vendor proprietary 
extensions such as "<spacer>" or *"<marquee>"* (this is usually fixed by 
using CSS to achieve the desired effect instead).

Thanks and Congratulations!!