CSS 伪元素应用元素的第一个字符 [英] CSS pseudo-element to apply the first character of an element

问题描述

我的 h1 标签中有以下内容:(Hello World)"，所以我将以下内容添加到我的 css 以更改此元素的第一个字符:

I have the following content in my h1 tag: "(Hello World)" so I add the following to my css to change the first character of this element:

h1:first-letter { font-size:63px; color:#510007; font-family:Helvetica; }

但是，正如我所注意到的，第一个字母仅用于字母，那么是否有任何解决方法可以将此样式应用于第一个字符?在这种情况下是(".

But, as I noticed, first-letter is only for letters, so is there any workarounds to apply this style to the first char? Which in this case is "(".

推荐答案

来自 规格:

标点符号(即 Unicode 中定义的字符 [UNICODE] 在open"(Ps)、close"(Pe)、initial"(Pi)、final"(Pf)和other"(Po)标点类)中，在第一个字母之前或之后应该是包括

Punctuation (i.e, characters defined in Unicode [UNICODE] in the "open" (Ps), "close" (Pe), "initial" (Pi). "final" (Pf) and "other" (Po) punctuation classes), that precedes or follows the first letter should be included

所以你的括号和字母H被:first-letter选中，因为(被认为是标点符号，而不是字母.

So your bracket and the letter H are selected by :first-letter, because ( is considered a punctuation symbol, not a letter.

有两种解决方法:

1. 将左括号括在 span 标记中:

<!-- To style both (), wrap both in <span> tags -->
<h1><span>(</span>Hello World)</h1>

和目标h1 span:

h1 span {
    font-size: 63px;
    color: #510007;
    font-family: Helvetica;
}

从文本中删除括号:

Drop the brackets from your text:

<h1>Hello World</h1>

并使用 :before 和/或 :after 代替(IE7 和更早版本不支持):

and use :before and/or :after instead (not supported in IE7 and older):

/* To style both (), use h1:before, h1:after */
h1:before {
    font-size: 63px;
    color: #510007;
    font-family: Helvetica;
}

h1:before { content: '('; }
h1:after { content: ')'; }

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