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HTMLが5になるまで
1991 : HTML誕生
HTML 2.0
HTML 3.0
HTML 4.0
"X"HTMLとは
The X stood for “eXtreme” and web developers were required to cross their arms in an X shape when speaking the letter.
…No, not really.
The X stood for “eXtensible”
HTML4.01とXHTMLの差
HTML
XHTML
XHTML1.0と1.1の差
1.0
1.1
XHTMLが主流に?
"It was a disaster."
W3C VS WHATWG
XHTML IS DEAD