CSS Clearfix

CSSによるclearとclearfixの使い方｜floatを綺麗に解除しよう！

Float & clear · Web Dev Topics · Learn the Web

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Understanding css floats, clear property and clearfix method

Clear:both, Clearfix, Floats…Oh My!

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CSS Clearfix How does Clearfix work in CSS with Examples?

다음 요소에게는 float로 부터 자유를! - [CSS] clear: both; : 네이버 블로그

CSS Clearfix for `admin-contents` - part deux - bug - Discourse Meta