CSS border-box 值
cssweb developmentfront end technology更新于 2024/7/19 21:00:17
使用 CSS background-origin 属性设置 border-box 值。使用 border-box 值时，背景图像从边框的左上角开始。
您可以尝试运行以下代码来实现 border-box 值:
示例
<!DOCTYPE html>
<html>
<head>
<style>
#value1 {
border: 3px solid blue;
padding: 30px;
background: url(https://www.cainiaomax.com/assets/videotutorials/courses/html_online_training/380_course_216_image.jpg);
background-repeat: no-repeat;
background-origin: padding-box;
}
#value2 {
border: 3px solid orange;
padding: 30px;
background: url(https://www.cainiaomax.com/assets/videotutorials/courses/html_online_training/380_course_216_image.jpg);
background-repeat: no-repeat;
background-origin: border-box;
}
#value3 {
border: 3px dashed yellow;
padding: 30px;
background: url(https://www.cainiaomax.com/assets/videotutorials/courses/html_online_training/380_course_216_image.jpg);
background-repeat: no-repeat;
background-origin: content-box;
}
</style>
</head>
<body>
<h1>padding-box value</h1>
<div id = "value1">
<h2>Heading 2</h2>
<p>This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text.
<h3>Heading 3</h3>
This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text.</p>
</div>
<h1>border-box value</h1>
<div id = "value2">
<h2>Heading 2</h2>
<p>This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text.
<h3>Heading 3</h3>
This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text.
This is demo text.
</p>
</div>
<h1>content-box value</h1>
<div id = "value3">
<h2>Heading 2</h2>
<p>This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text.
<h3>Heading 3</h3>
This is demo text. This is demo text. This is demo text.
This is demo text. This is demo text. This is demo text.
This is demo text.
</p>
</div>
</body>
</html>
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有用资源
css 参考教程 - 该教程包含有关 css 的更多信息:https://www.cainiaomax.com/css/
