JSFiddle - React, Tailwind, and code Playground

HTML

<input>
<input disabled>
<input type="submit">
<input type="submit" disabled>

CSS

input:not([disabled]):not([type="submit"]):focus {
box-shadow:0 0 2px 0 #0066FF;
-webkit-box-shadow:0 0 4px 0 #66A3FF;
}