Hi DPs', I have been doing w3c validation for my website and reduced errors from 300 to 6, but I can't able to reduce the remaining 6 errors, please help the errors details below: Six errors showing in this line only: <marquee align="top" behavior="scroll" direction="up" height="200" scrolldelay="400"> You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. 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 "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead). This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
We use the following doc type: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
OK. The doctype doesn't even matter here, because the marquee tag is a non-standard HTML element and thus will fail every validation regardless of doctype. More in Wikipedia.
what are you trying to accomplish with the marquee? There may be alternatives that meet the validator standards. I agree in regards to marquee's age. I haven't used that in 10+years.