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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <div class="wrapper">
	<div class="controls">
		<div class="controls__group controls__group--radio">
			<div class="controls__rbtn">
				<input id="item__1" type="radio" name="cells"  value="item1" checked>
				<label for="item_1">Grid cell 1</label>
			<div class="controls__rbtn">
				<input id="item__2" type="radio" name="cells" value="item2">
				<label for="item_2">Grid cell 2</label>
			<div class="controls__rbtn">
				<input id="item__3" type="radio" name="cells" value="item3">
				<label for="item_3">Grid cell 3</label>
		<div class="controls__group">
			<label for="size">Size</label>
			<input id="size" type="range" min="1" max="6" value="1">
		<div class="controls__group">
			<label for="posX">X Position</label>
			<input id="posX" type="range" min="1" max="6" value="1">
		<div class="controls__group">
			<label for="posY">Y Position</label>
			<input id="posY" type="range" min="1" max="6" value="1">
	<div class="grid">
		<div class="grid__item" data-id="item1"></div>
		<div class="grid__item" data-id="item2"></div>
		<div class="grid__item" data-id="item3"></div>
              * {
	box-sizing: border-box;

:root {
	--gridSize: 6;
	--posX: 1;
	--posY: 1;
	--size: 1;
	--color: blue;

.wrapper {
	width: 1200px;
	margin: 50px auto;
	display: flex;

.controls {
	margin-right: 40px;

.controls__group {
	margin-bottom: 30px;
	> * {
		display: block;

.controls__rbtn {
	margin-bottom: 10px;

.grid {
	display: grid;
	grid-template-columns: repeat(var(--gridSize), 1fr);
	grid-template-rows: repeat(var(--gridSize), 1fr);
	grid-gap: 5px;
	border: 1px solid grey;
	width: 800px;
	height: 800px;

.grid__item {
	background-color: var(--color);
	grid-column: var(--posX) / span var(--size);
	grid-row: var(--posY) / span var(--size);
	&:nth-child(2) {
		--color: red;
	&:nth-child(3) {
		--color: yellow;
              const ctrlSize = document.querySelector('#size')
const ctrlposX = document.querySelector('#posX')
const ctrlposY = document.querySelector('#posY')
const rBtns = [...document.querySelectorAll(`input[type='radio']`)]
const gridItems = [...document.querySelectorAll('.grid__item')]
const inputs = [ctrlSize, ctrlposX, ctrlposY]

const gridSize = 6

let checked
let currItem
let size
let props

const getValues = (x) => {
	x.props = {
		size: parseInt(getComputedStyle(x).getPropertyValue('--size')),
		posX: parseInt(getComputedStyle(x).getPropertyValue('--posX')),
		posY: parseInt(getComputedStyle(x).getPropertyValue('--posY'))

// Find currently selected item
const findCurrItem = () => {
	rBtns.forEach((el) => {
		if (el.checked) {
			currItem = document.querySelector(`[data-id=${el.value}]`)

// Set sliders to correct positions
rBtns.forEach((el, index) => {
	el.addEventListener('click', () => {
		findCurrItem() // find the currently selected item
		getValues(currItem) //get the current properties of the item
		let currItemProperties = Object.values(currItem.props) // create an array from props
		inputs.forEach((el, index) => {
			el.value = currItemProperties[index] // set the sliders to the corresponding values

ctrlSize.addEventListener('change', (e) => {
	size = parseInt(
	let currPos = currItem.props.posX > currItem.props.posY ? currItem.props.posX : currItem.props.posY
	if (size < gridSize - (currPos - 1)) {
		size = size
	} else {
		size = gridSize - (currPos - 1)
	}'--size', size)

const calcNewProps = (el, str) => {
	let currSize = currItem.props.size
	if (posX < gridSize - (currSize - 1)) {
		posX = posX
	} else {
		posX = gridSize - (currSize - 1)
	}, el)

ctrlposX.addEventListener('change', (e) => {
	posX = parseInt(
	calcNewProps(posX, '--posX')

ctrlposY.addEventListener('change', (e) => {
	posY = parseInt(
	calcNewProps(posY, '--posY')

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