WEB標準Webページレイアウトで使ってはいけないHTMLタグ_体験交流

Do not use these html elements in html pages.
　　Presentational elements should not be used.
　　Support for some elements has been (or will be) deprecated; they should not be used.

　　Don't Use These Tags

Presentational

b
big
hr
i
small
sub
sup
tt
Deprecated
basefont
center
dir
font
isindex
menu

strike
u

Unsupported and Damaging in Practice

tfoot

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