JSFiddle - React, Tailwind, and code Playground

HTML

<span attribut="">Attribut 1</span>
<span attribut="">Attribut 2</span>
<br>
<span attribut="d">Attribut 1</span>
<span attribut="d">Attribut 2</span>

CSS

[attribut=""] {
    color:blue
}
[attribut*="d"] {
    color:red
}