JSFiddle - React, Tailwind, and code Playground

by Barry McNamara

HTML

<div id='parent'>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
</div>

CSS

#parent {
  display: grid;
  grid-auto-columns: min-content;
  border: 1px solid black;
  width: 350px;
  font-size: 10pt;
}

#parent > div {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 75px;
}

#w1 {
  width: 200px;
  grid-column: 1 / 3;
  grid-row: 1 / 2;
}

#w2 {
  width: 150px;
  grid-column: 3 / 5;
  grid-row: 1 / 2;
  
}

#w3 {
  width: 100px;
  grid-column: 1 / 2;
  grid-row: 2 / 3;
}

#w4 {
  width: 150px;
  grid-column: 2 / 4;
  grid-row: 2 / 3;
}

#w5 {
  width: 100px;
  grid-column: 4 / 5;
  grid-row: 2 / 3;
}

JavaScript

function randint(min, max) {
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

const children = document.getElementById('parent').children;
const skip = 360 / children.length;
let value = randint(0, 359);
for (let i = 0; i < children.length; i += 1) {
	const elm = children[i];
	elm.style.backgroundColor = `hsl(${value}, 100%, 85%)`;
  value += skip;
  elm.id = "w" + (i + 1);
  const style = window.getComputedStyle(elm);
  elm.innerHTML = `width: ${elm.offsetWidth}px<br \>
  col: ${style.getPropertyValue('grid-column')}<br \>
  row: ${style.getPropertyValue('grid-row')}`;
}