How wide is the default `<body>` margin?
Question
What's the default margin that HTML sets for its <body> tag? I noticed that there's some automatic margin, but I'm wondering if anyone knows how much it is (and whether it's in px or % , etc.).
4 answers
solution1
64 ACCPTED 2012-10-29 19:07:37
In most major browsers, the default margin is 8px on all sides. It is defined in pixels by the user-agent-stylesheet your browser provides.
Some browsers allow you to create and use your own user-agent-stylesheet , but if you are developing a website, I would recommend staying away from changing this, since your users most likely will not have a modified stylesheet and would then see a different page than you do.
If you want to change it, you can just do this:
body {
margin: 0px;
padding: 0px;
...
}
But if you have a large project and want to be more complete, use normalize.css . It resets a lot of default values to be consistent across browsers.
solution2
4 2018-05-04 08:02:50
According to W3School's CSS reference, the default properties and values for a body tag are,
body{ display : block; margin : 8px; }
And one can quickly get the computed details of any element by accessing the Computed Pane in the Chrome Dev tools.
solution3
0 2021-06-29 05:57:37
css 默认值https://www.w3schools.com/cssref/css_default_values.asp
body{ display : block; margin : 8px; }
solution4
0 2022-01-10 11:03:56
这对我有用：
margin: 0px;
solution5
0 2022-12-16 10:28:38
* {
margin: 0;
padding: 0;
}
The body can also be reset using the asterix tag.
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