JSFiddle - React, Tailwind, and code Playground
by George Batt
HTML
<form id="commentform">
<p class="class1">P</p>
<p class="class2">P</p>
<p>
<input id="captcha_code"></input>
</p>
</form>
CSS
#commentform p:not([class]){
background:#EEE;
}