css - Remove "whitespace" between div element

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css - Remove "whitespace" between div element

posted Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

css - Remove "whitespace" between div element

This is my HTML code

<div id="div1">
    <div></div><div></div><div></div><br/><div></div><div></div><div></div>
</div>

My CSS:

#div1 {
    width:150px;height:100px;white-space:nowrap;
    border:blue 1px solid;padding:5px;
}
#div1 div {
    width:30px;height:30px;
    border:blue 1px solid;
    display:inline-block;
    *display:inline;zoom:1;
    margin:0px;outline:none;
}

If I insert the <!DOCTYPE html> before the <html> tag, the page will look like this:

enter image description here

But if I remove the <!DOCTYPE html> tag, the 'whitespace' between the two lines will be remove enter image description here

But I'd like to use <!DOCTYPE html> tag, it's recommend, but I can't find any CSS rule that can remove that whitespace, I have used margin:0;outline:none; etc... but it not work , anyone help me. Thanks!( I'm not good at English ...)

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1 Reply

深蓝 · Answer 1 · 2021-10-17T00:10:26+0000

The cleanest way to fix this is to apply the vertical-align: top property to you CSS rules:

#div1 div {
   width:30px;height:30px;
   border:blue 1px solid;
   display:inline-block;
   *display:inline;zoom:1;
   margin:0px;outline:none;
   vertical-align: top;
}

If you were to add content to your div's, then using either line-height: 0 or font-size: 0 would cause problems with your text layout.

See fiddle: http://jsfiddle.net/audetwebdesign/eJqaZ/

Where This Problem Comes From

This problem can arise when a browser is in "quirks" mode. In this example, changing the doctype from:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

to

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Strict//EN">

will change how the browser deals with extra whitespace.

In quirks mode, the whitespace is ignored, but preserved in strict mode.

References:

html doctype adds whitespace?

https://developer.mozilla.org/en/Images,_Tables,_and_Mysterious_Gaps

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css - Remove "whitespace" between div element

css - Remove "whitespace" between div element

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Where This Problem Comes From

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