Ah, that page is marked [Out of Date] which is the W3's way of saying that the page is no longer being maintained.
The W3 have thousands of pages that are [Out of Date].
I hate to say it, they are not perfect. I've found many pages that don't validate. But, the errors are very minor and in many cases a "simple oversight" by the most recent author. If I find any of those, I'll usually report them to the author.
We should be testing the Target.com site and not the W3. Their home page weighs in at...
Yikes! Target.com doesn't care about its visitors. If it did, it surely wouldn't be throwing this bag of bricks on each visitor...
HTML 2 190,397
CSS 3 20,273
Scripts 8 43,145
Images 35 273,961
CSS Images 163 319,447
Other 7 0
Total 218 847,223
847k of information for one page (500k+ of images). 119 seconds to load on 56k. Over 500 links on one page. How does that sound on a Screen Reader?