CSS3 基础（002_边框图）_css3边框图-优快云博客

原始网址：http://www.w3schools.com/css/css3_border_images.asp

翻译：

CSS3 边框图（CSS3 Border Images）

CSS3 Border Images

<!DOCTYPE html>
<html>
<head>
<style>
#border_image_top {
    -moz-border-bottom-colors: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    border-color: transparent;
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 30 30 30
        round round;
    border-style: solid;
    border-width: 10px;
    padding: 15px;
}

.w3-codespan {
    background-color: #f1f1f1;
    color: crimson;
    font-size: 110%;
    padding-left: 4px;
    padding-right: 4px;
}
</style>
</head>
<body>
    <div id="border_image_top">
        <h2>CSS3 Border Images</h2>
        <p>
            With the CSS3
            <code class="w3-codespan">border-image</code>
            property, you can set an image to be used as the border around an element.
        </p>
    </div>
</body>
</html>

Browser Support

表格里的数字代表对 CSS3 属性全面支持的各浏览器的第一个版本号。
数字之后跟从 -webkit-、-moz- 或 -o- 指定带前缀工作的第一个版本号。

属性（Property）
border-image	16.0 4.0 -webkit-	11.0	15.0 3.5 -moz-	6.0 3.1 -webkit-	15.0 11.0 -o-

CSS3 border-image 属性

CSS3 border-image 属性允许你指定图片环绕元素以取代常规边框。
该属性由 3 部分组成：

作为边框使用的图片
在何处划分图片
定义中截面是重复还是拉伸（define whether the middle sections should be repeated or stretched）

我们将使用下列图片（名称为 "border.png"）：

border-image 属性接管图片并将它划分为 9 块儿，如同一个 tic-tac-toe 板。然后，再用它进行角置换，中截面（middle sections）将按照你指定的方式进行重复或拉伸（repeated or stretched）。

注意：为了使 border-image 起作用，我们还需要对元素设置 border 属性！

在此，图片的中截面将重复（repeated）以创建边框：
CSS3 border-image 属性

<!DOCTYPE html>
<html>
<head>
<style>
#border_image {
    -moz-border-bottom-colors: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    border-color: transparent;
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 30 30 30
        round round;
    border-style: solid;
    border-width: 10px;
    padding: 15px;
    text-align: center;
}
</style>
</head>
<body>
    <p id="border_image">An image as a border!</p>
</body>
</html>

以下为示例代码：

#borderimg {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(border.png) 30 round; /* Safari 3.1-5 */
    -o-border-image: url(border.png) 30 round; /* Opera 11-12.1 */
    border-image: url(border.png) 30 round;
}

CSS3 border-image 属性

<!DOCTYPE html>
<html>
<head>
<style>
#borderimg {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 round; /* Safari 3.1-5 */
    -o-border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 round; /* Opera 11-12.1 */
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 round;
}
</style>
</head>
<body>
    <p>The border-image property specifies an image to be used as the border around an element:</p>
    <p id="borderimg">Here, the middle sections of the image are repeated to create the border.</p>
    <p>Here is the original image:</p>
    <img src="https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png">
    <p>
        <strong>Note:</strong> Internet Explorer 10, and earlier versions, do not support the border-image property.
    </p>
</body>
</html>

在此，图片的中截面将拉伸（stretched）以创建边框：
CSS3 border-image 属性

<!DOCTYPE html>
<html>
<head>
<style>
#border_image {
    -moz-border-bottom-colors: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    border-color: transparent;
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 30 30 30;
    border-style: solid;
    border-width: 10px;
    padding: 15px;
    text-align: center;
}
</style>
</head>
<body>
    <p id="border_image">An image as a border!</p>
</body>
</html>

以下为示例代码：

#borderimg {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(border.png) 30 stretch; /* Safari 3.1-5 */
    -o-border-image: url(border.png) 30 stretch; /* Opera 11-12.1 */
    border-image: url(border.png) 30 stretch;
}

CSS3 border-image 属性

<!DOCTYPE html>
<html>
<head>
<style>
#borderimg {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 stretch; /* Safari 3.1-5 */
    -o-border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 stretch; /* Opera 11-12.1 */
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30 stretch;
}
</style>
</head>
<body>
    <p>The border-image property specifies an image to be used as the border around an element:</p>
    <p id="borderimg">Here, the middle sections of the image are stretched to create the border.</p>
    <p>Here is the original image:</p>
    <img src="https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png">
    <p>
        <strong>Note:</strong> Internet Explorer 10, and earlier versions, do not support the border-image property.
    </p>
</body>
</html>

提示：border-image 属性实际上是 border-image-source、border-image-slice、border-image-width、border-image-outset 和 border-image-repeat 的简写属性。

CSS3 border-image - Different Slice Values

不同的划分值（slice values）会完全改变边框的外观：

示例 1：
CSS3 border-image

<!DOCTYPE html>
<html>
<head>
<style>
#border_image3 {
    -moz-border-bottom-colors: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    border-color: transparent;
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 50 50 50 50
        round round;
    border-style: solid;
    border-width: 10px;
    padding: 15px;
    text-align: center;
}
</style>
</head>
<body>
    <p id="border_image3">border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 50 round;</p>
</body>
</html>

示例 2：
CSS3 border-image

<!DOCTYPE html>
<html>
<head>
<style>
#border_image4 {
    -moz-border-bottom-colors: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    border-color: transparent;
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 20% 20% 20% 20% round round;
    border-style: solid;
    border-width: 10px;
    padding: 15px;
    text-align: center;
}
</style>
</head>
<body>
    <p id="border_image4">border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 20% round;</p>
</body>
</html>

示例 3：
CSS3 border-image

<!DOCTYPE html>
<html>
<head>
<style>
#border_image5 {
    -moz-border-bottom-colors: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    border-color: transparent;
    border-image: url("https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png") 30% 30% 30% 30% round round;
    border-style: solid;
    border-width: 10px;
    padding: 15px;
    text-align: center;
}
</style>
</head>
<body>
    <p id="border_image5">border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 30% round;</p>
</body>
</html>

以下为示例综合代码：

#borderimg1 {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(border.png) 50 round; /* Safari 3.1-5 */
    -o-border-image: url(border.png) 50 round; /* Opera 11-12.1 */
    border-image: url(border.png) 50 round;
}

#borderimg2 {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(border.png) 20% round; /* Safari 3.1-5 */
    -o-border-image: url(border.png) 20% round; /* Opera 11-12.1 */
    border-image: url(border.png) 20% round;
}

#borderimg3 {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(border.png) 30% round; /* Safari 3.1-5 */
    -o-border-image: url(border.png) 30% round; /* Opera 11-12.1 */
    border-image: url(border.png) 30% round;
}

CSS3 border-image

<!DOCTYPE html>
<html>
<head>
<style>
#borderimg1 {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 50 round; /* Safari 3.1-5 */
    -o-border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 50 round; /* Opera 11-12.1 */
    border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 50 round;
}

#borderimg2 {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 20% round; /* Safari 3.1-5 */
    -o-border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 20% round; /* Opera 11-12.1 */
    border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 20% round;
}

#borderimg3 {
    border: 10px solid transparent;
    padding: 15px;
    -webkit-border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 30% round; /* Safari 3.1-5 */
    -o-border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 30% round; /* Opera 11-12.1 */
    border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 30% round;
}
</style>
</head>
<body>
    <p id="borderimg1">border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 50 round;</p>
    <p id="borderimg2">border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 20% round;</p>
    <p id="borderimg3">border-image: url(https://i-blog.csdnimg.cn/blog_migrate/418431eddb9ef0980d03591b06e46ad4.png) 30% round;</p>
    <p><strong>Note:</strong> Internet Explorer 10, and earlier versions, do not support the border-image property.</p>
</body>
</html>