Can you use regular expression in CSS img[alt=*]?

Question

For the following image html:

<img src="/some.png" alt="something" />

In CSS, you can target an img element with a specific alt value:

img[alt="something"] {
  width: 5em;
}

How can I select all img elements with text in the alt attribute? I was thinking of something like:

img[alt="*"]

but that doesn't seem to work. Any ideas?

Answer 1

You can target elements which have an alt attribute like this

img[alt]

I believe this will also match those with an empty alt attribute however. I don't think you can specifically target those with a nonempty value. You could write a rule to match those with empty values and undo ignore the rules which would otherwise be applied (via !important) although that gets messy.