Detailed explanation of CSS width and height properties-CSS Tutorial-php.cn

Detailed explanation of CSS width and height properties

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Release： 2022-08-02 17:44:55

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This article brings you relevant knowledge about css, which mainly introduces related issues about setting the height and width attributes of elements. The height and width attributes are used to set the height and width of elements. , the height and width properties do not include padding, borders, or margins. Let’s take a look at it together, I hope it will be helpful to everyone. .

Detailed explanation of CSS width and height properties

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CSS setting height and width

The height and width properties are used to set the height and width of the element.
The height and width properties do not include padding, borders, or margins. It sets the height or width of the area within the element's padding, border, and margins.

CSS height and width values 

##height and width The property can be set to the following values:

auto - Default. The browser calculates the height and width.
#length - Define height/width in px, cm, etc.
% - Defines the height/width as a percentage of the containing block.
#initial - Set height/width to default values.
inherit - Inherit height/width from its parent value.

##The example is as follows:

Set the height and width of the

element:

<!DOCTYPE html>
<html>
<head>
<style>
div {
  height: 200px;
  width: 50%;
  background-color: powderblue;
}
</style>
</head>
<body>
<h1>设置元素的高度和宽度</h1>
<p>这个 div 元素的高度为 200 像素，宽度为 50%：</p>
<div></div>
</body>
</html>

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Output result:

Detailed explanation of CSS width and height properties Remember, the height and width properties do not include padding, borders, or margins! They set the height/width of the area within the element's padding, borders, and margins!

Set max-width

The max-width attribute is used to set the maximum width of an element.

max-width (maximum width) can be specified as a length value (e.g. px, cm, etc.) or as a percentage (%) of the containing block, or it can be set to none (the default. Meaning there is no maximum width).

When the browser window is smaller than the width of the element (500px), the previous

problem will occur. The browser will then add a horizontal scroll bar to the page.

In this case, using max-width can improve the browser's handling of small windows.

Tip: Drag the browser window to less than 500px width to see the difference between the two divs!

Note: The value of the max-width attribute will override width.

The example is as follows:

<!DOCTYPE html>
<html>
<head>
<style>
div {
  max-width: 500px;
  height: 100px;
  background-color: powderblue;
}
</style>
</head>
<body>
<h1>设置元素的最大宽度</h1>
<p>这个 div 元素的高度为 100 像素，最大宽度为 500 像素：</p>
<div></div>
<p>请调整浏览器窗口来查看效果。</p>
</body>
</html>

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Output result:

Detailed explanation of CSS width and height properties ##css size attribute:

(Learning video sharing: Detailed explanation of CSS width and height properties css video tutorial

html video tutorial)

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