CodePen Embed - 属性选择器最基本的用法

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<p>这里是一段描述性的文案，里面有许多 a 标签，链接了许多不同的网页。<a href="https://developer.mozilla.org/zh-CN/docs/Web/CSS/Attribute_selectors">MDN-属性选择器</a>，又或者其他的<a href="https://developer.mozilla.org/zh-CN/docs/Learn/CSS/Introduction_to_CSS/Attribute_selectors">网页链接</a>。
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p {
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    margin: 50px auto;
    font: 16px/2 sans-serif;
}
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[href] {
    color: blue;
}

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