在CSS中，我不知道如何在“第一行”或“第一字母”中添加“内容”

Question

ul.myList {
  list-style-type: none;
  padding: 0;
  margin: 10px 0;


&:first-line {
  color: $blue;
  text-align: left;
  font-size: 100%
}

I used "first-line" to make the color of the first line blue. What I want to do is to add content. I tried this by using

content: "+";

I also tried using a li before, and by using first-letter . However using first-letter , replicates the "+" to all the elements of the list. So my interface would look like this:

+ parent
  + child
  + child

I simply want this:

+ parent (blue color)
child
child
child

Can someone help me ?

Answer 1

You can't use the content property with just anything (go here ), you have to use it with either the ::before or the ::after pseudo-element; in your case, ::before (Obviously, because you want to insert the "+" before the text, not after it).

Here is how you do it:

 p::first-line { color: blue; text-align: left; font-size: 100% } p::before { content: "+"; } 

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See this article as well.