JSFiddle - React, Tailwind, and code Playground

by HappyFone

HTML

<button class="theButton" id="theButton">
Click to disable
</button>

CSS

.theButton {
    display: inline-block;
    width: 540px;
    margin: 20px 0 10px;
    padding: 12px;
    background-color: #b6adb4;
    border-radius: 2px;
    border: 0px;
    text-align: center;
    color: #fff !important;
    text-decoration: none !important;
    font-size: 16px;
    font-family: 'Rubik', sans-serif;
    cursor: pointer;
}

.theButton:disabled {
    display: inline-block;
    width: 540px;
    margin: 20px 0 10px;
    padding: 12px;
    background-color: #b6adb4;
    border-radius: 2px;
    border: 0px;
    text-align: center;
    color: #fff !important;
    text-decoration: none !important;
    font-size: 16px;
    font-family: 'Rubik', sans-serif;
    opacity: 0.5;
}

JavaScript

/* ignore top lines */
document.getElementById("theButton").addEventListener("click", myFunction);
/* ignore top lines */

function myFunction() {
document.getElementById("theButton").disabled = true;
}