这个缩写词和首字母缩略词选择器地址是什么？

Question

我正在寻找 Zen garden 项目之一的源代码，我发现了我以前从未见过的选择器：

abbr[title],
acronym[title] {
    border-bottom-width: 0;
}

他们试图解决什么问题？他们的目的是什么？

Answer 1

html个元素：

缩写:

The HTML Abbreviation element () represents an abbreviation and optionally provides a full description for it. If present, the title attribute must contain this full description and nothing else.

abbr[title] {
  color: red;
}

<p>I do <abbr title="Hypertext Markup Language">HTML</abbr>
</p>

缩写词

The HTML Acronym Element () allows authors to clearly indicate a sequence of characters that compose an acronym or abbreviation for a word.

Obsolete This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

acronym[title] {
  color: red;
}

<p>The <acronym title="World Wide Web">WWW</acronym> is only one component of the Internet.</p>

参考文献:

acronym

abbr

Answer 2

Here the solution

很简单，目标缩写标签的标题:)

这个缩写词和首字母缩略词选择器地址是什么？

What this abbr and acronym selectors address?

css

css-selectors