The line height includes the content area and the blank area that is symmetrically expanded based on the content area; generally speaking, it can also be considered as the vertical distance between the baselines of adjacent text lines. In CSS, you can use the line-height attribute to set the line height; this attribute sets the distance (line height) between lines, and negative values are not allowed.
The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.
1. Baseline, bottom line, top line
- The line height includes the content area and is based on the content area A symmetrically expanded white space; generally, it can also be thought of as the vertical distance between the baselines of adjacent text lines.
- The baseline is not the lower edge of Chinese characters, but the lower edge of the English letter "x"
2. Line spacing and line height
3. Content area
- The area wrapped by the bottom line and the top line may not necessarily be in practice You can see it, but it exists.
4. Inline box
- ##Inline box is just a concept, it cannot be displayed, but it And it does exist
- its height is the line height
- When there are no other factors (padding) affecting it, the inline box is equal to the content area
- The height of the row box is equal to the maximum value of the row height among all elements in the row
For inline elements such as em, strong, span, etc., their padding, margin, border-top, and border-bottom will not increase the row height.
- padding will be covered; margin will be reset to 0; border-top and border-bottom will also be covered.
- padding-left, padding-right, border-left and border-right are available.
The img element will affect the row height - Setting the padding, border and margin of the inline element will not increase the height of the outer element, as shown below:
-
In CSS we can use the line-height attribute to set the line height. The line-height attribute can be used to set the distance between lines (line height). Negative values are not allowed.
The line-height property affects the layout of the line box. When applied to a block-level element, it defines the minimum distance between baselines in that element rather than the maximum distance.
The calculated difference between line-height and font-size (known as "line spacing" in CSS) is divided into two halves and added to the top and bottom of a line of text content. The smallest box that can contain this content is a line box.
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
p.small {
line-height: 90%
}
p.big {
line-height: 200%
}
</style>
</head>
<body>
<p>
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</p>
<p class="small">
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</p>
<p class="big">
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</p>
</body>
</html>Rendering:
(Learning video sharing:
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