Why is a floating box outside its container?
This code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" ><TITLE ></TITLE > <BLOCKQUOTE STYLE="BACKGROUND: YELLOW; HEIGHT: 10EX" ><P STYLE="FLOAT: RIGHT" >Lorem<HR ><P STYLE="FLOAT: RIGHT" >ipsum</BLOCKQUOTE >
- Why is BLOCKQUOTE wider than HR?
- Why is ‘Lorem’ aligned with the widened BLOCKQUOTE?
- Why is ‘ipsum‘ not aligned likewise?
由cor-el于修改
被采纳的解决方案
To achieve what you want, you have to add some clearing DIV elements or CSS rules.
data:text/html;charset=utf-8, <!doctype html public "-//w3c//dtd html 4.01//en"> <head> <title></title> </head> <body> <blockquote style="background: yellow;" > <p style="float: right;" >Lorem</p> <hr style="clear: both;" > <p style="float: right;" >ipsum</p> <div style="clear: both;"></div> </blockquote> </body>定位到答案原位置 👍 0
所有回复 (5)
Well, not quite the code I intended…
Maybe this will work:
< !DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" >< TITLE >< /TITLE > < BLOCKQUOTE STYLE="BACKGROUND: YELLOW; HEIGHT: 10EX" >< P STYLE="FLOAT: RIGHT" >Lorem< HR >< P STYLE="FLOAT: RIGHT" >ipsum< /BLOCKQUOTE >
由cor-el于修改
Or this:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" ><TITLE ></TITLE > <BLOCKQUOTE STYLE="BACKGROUND: YELLOW; HEIGHT: 10EX" ><P STYLE="FLOAT: RIGHT" >Lorem<HR ><P STYLE="FLOAT: RIGHT" >ipsum</BLOCKQUOTE >
选择的解决方案
To achieve what you want, you have to add some clearing DIV elements or CSS rules.
data:text/html;charset=utf-8, <!doctype html public "-//w3c//dtd html 4.01//en"> <head> <title></title> </head> <body> <blockquote style="background: yellow;" > <p style="float: right;" >Lorem</p> <hr style="clear: both;" > <p style="float: right;" >ipsum</p> <div style="clear: both;"></div> </blockquote> </body>
由cor-el于修改
What is ‘!doctype’?
I think that:
- the rule is being shortened by ‘Lorem’ because its margin overlaps it,
- ‘ipsum’ is lower than ’Lorem’ because of the margin under the rule,
- ‘ipsum’ is to the left of ‘Lorem’ because the margin under the rule is too narrow.
Correct me if I am wrong. I have probably missed two important points:
- a float can shorten a rule,
- margins around a float do not collapse.
Thank you,
Chris
Floats within a container do not make that container adjust its width and height to fit the floats unless you use a clear rule.
So in your case the P elements float, but the HR element doesn't and is rendered first (your code looks the same in Google Chrome as in Firefox).
If you need a more precise explanation about how floats work then it is best to ask advice at the MozillaZine "Web Development/Standards Evangelism" forum.
The helpers at that forum are more knowledgeable about web development issues.
You need to register at the MozillaZine forum site in order to post at that forum.