JSFiddle - React, Tailwind, and code Playground

by MegaScience

CSS

div {
    min-height: 70px;
    min-width: 70px;
    background-color: red;
    float: left;
}
div[id^="test-"] {
    background-color: green !important;
}

JavaScript

var id, element;
for(var i = 0; i < 20; i++) {
    element = document.createElement("div");
    element.id = element.innerHTML = "test-" + Math.random().toString(36).substr(2, 5);
    document.body.appendChild(element);
}