Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.1k views
in Technique[技术] by (71.8m points)

css - Margin collapse and clearance

I am reading the W3C specs and I really don't understand that one :

If the top and bottom margins of an element with clearance are adjoining, its margins collapse with the adjoining margins of following siblings but that resulting margin does not collapse with the bottom margin of the parent block.

Anyone could explain or JSFiddle it for me ?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Yes. Take a look at the below snippet [JSfiddle] in either Firefox or IE.1

.case { width:200px; background-color:yellow; }

.container { background-color:lightblue; margin-bottom:70px; padding-top:0.01px; }
.preface { float:left; height: 58px; width: 100px; border: 1px solid red; }
.one .intro { clear: left; margin-top:60px; }
.two .intro { clear: left; margin-top:59px; }
<div class="case one">
  <div class="container">
    <div class="preface">
      lorem ipsum
    </div>
    <div class="intro"></div>
  </div>
  after
</div>
<hr>
<div class="case two">
  <div class="container">
    <div class="preface">
      lorem ipsum
    </div>
    <div class="intro"></div>
  </div>
  after
</div>

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...