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CSS

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HTML 

              
                <!--
Resources by Ana Tudor:
https://codepen.io/thebabydino/pen/gOpMeWv
https://codepen.io/thebabydino/pen/LYGGwrm
-->

<form class="controls">
	<fieldset>
		<legend>Blend mode</legend>
		<div>
			<label for="r1">Multiply</label>
			<input type="radio" id="r1" checked name="blendMode" value="multiply">
		</div>
		<div>
			<label for="r2">Screen</label>
			<input type="radio" id="r2" name="blendMode" value="screen">
		</div>
		<div>
			<label for="r3">None</label>
			<input type="radio" id="r3" name="blendMode" value="none">
		</div>
	</fieldset>
	<div>
		<label for="dotSize">Background size: <span data-size>0.75rem</span></label>
		<input type="range" min="0.3" max="1.5" step="0.1" value="0.5" id="dotSize" name="dotSize">
	</div>
	<div>
		<label for="contrast">Contrast: <span data-contrast>20</span></label>
		<input type="range" min="1" max="20" step="1" value="20" id="contrast" name="contrast">
	</div>
	<div>
		<label for="dotRadius">Dot radius: <span data-radius>53rem</span></label>
		<input type="range" min="20" max="100" step="1" value="70" id="dotRadius" name="dot radius">
	</div>
	<div>
		<label for="invert">Invert </label>
		<input type="checkbox" id="invert">
	</div>
</form>
<div class="grid">
	<div class="card">
		<div class="halftone"></div>
	</div>
	<div class="card">
		<div class="halftone"></div>
	</div>
	<div class="card">
		<div class="halftone"></div>
	</div>
	<div class="card">
		<div class="halftone"></div>
	</div>
	<div class="card">
		<div class="halftone"></div>
	</div>
	<div class="card">
		<div class="halftone"></div>
	</div>
	<div class="card">
		<div class="halftone"></div>
	</div>
	<div class="card">
		<div class="halftone"></div>
	</div>
</div>
!

CSS 

              
                * {
	box-sizing: border-box;
}

body {
	--size: 0.75rem;
	font-family: Helvetica, sans-serif;
	margin: 0;
	min-height: 100vh;
	padding: clamp(1rem, 2vw, 5rem);
	background: hsl(200deg 20% 10%);
	color-scheme: dark;
	color: white;
	accent-color: hotpink;
}

.grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
	gap: 1rem;
	margin-top: 1rem;
}

.card {
	--mask: linear-gradient(rgb(0 0 0), rgb(0 0 0 / 0.5));
	--dotsColor: 255 255 255;
	--bg: radial-gradient(circle at center, rgb(var(--dotsColor)) 3%, rgb(var(--dotsColor) / 0.4) var(--dotRadius, 70%));
	--bgSize: var(--size);
	--cardBg: linear-gradient(135deg, hotpink, blue);
	background: var(--cardBg);
	overflow: hidden;
	border: 2px solid;
	border-image: var(--cardBg) 30;
}

.halftone {
	position: relative;
	aspect-ratio: 1;
	background: rgb(0 0 0);
	filter: contrast(var(--contrast, 20)) invert(var(--invert, 0));
	mix-blend-mode: var(--blendMode, multiply);
}

.halftone::before {
	content: '';
	position: absolute;
	inset: 0;
	background-image: var(--bg);
	background-size: var(--bgSize, 0.75rem) var(--bgSize, 0.75rem);
	background-repeat: round;
	background-position: 0 0, var(--bgPosition) var(--bgPosition);
	-webkit-mask-image: var(--mask);
	mask-image: var(--mask);
	mask-size: cover;
	mask-position: center;
	transition: background-size 100ms;
}

.card:nth-child(even) {
	--bgSize: calc(var(--size) * 1.3);
	--bgPosition: calc(var(--bgSize) / 2);
	--stops: rgb(var(--dotsColor)) 3%, rgb(var(--dotsColor) / 0.15) calc(var(--dotRadius, 53%) * 0.95);
	--bg: radial-gradient(circle at center, var(--stops)), radial-gradient(circle at center, var(--stops));
}

.card:nth-child(3),
.card:nth-child(4) {
	--mask: radial-gradient(circle at center, rgb(0 0 0), rgb(0 0 0 / 0.2));
}

.card:nth-child(5),
.card:nth-child(6) {
	--mask: repeating-linear-gradient(45deg, rgb(0 0 0), rgb(0 0 0 / 0.55) 20%, rgb(0 0 0) 40%);
}

.card:nth-child(7),
.card:nth-child(8) {
	--mask: url(https://assets.codepen.io/85648/mask-test-2.png);
}

.card:nth-child(7) .halftone::before,
.card:nth-child(8) .halftone::before {
	mask-size: 80%;
	mask-repeat: no-repeat;
}

/* Controls */
.controls {
	columns: 300px;
	gap: 1rem;
	background: hsl(200, 20%, 15%);
	border-radius: 0.5rem;
	box-shadow: 0.1rem 0.1rem 1rem rgb(0 0 0 / 0.5);
	padding: clamp(1rem, 2vw, 5rem);
}

.controls > * {
	display: block;
	break-inside: avoid;
}

.controls * + * {
	margin-top: 0.5rem;
}

.controls > * + * {
	margin-top: 1rem;
}

input[type="range"] {
	display: block;
	margin-top: 0.5em;
}

fieldset {
	border: 1px solid grey;
}

legend {
	font-weight: 700;
}
!

JS 

              
                const blendModeInputs = [...document.querySelectorAll('input[name="blendMode"]')]
const dotSizeInput = document.querySelector('#dotSize')
const contrastInput = document.querySelector('#contrast')
const radiusInput = document.querySelector('#dotRadius')
const invertInput = document.querySelector('#invert')
const sizeLabel = document.querySelector('[data-size]')
const contrastLabel = document.querySelector('[data-contrast]')
const dotRadiusLabel = document.querySelector('[data-radius]')

blendModeInputs.forEach((input) => {
	input.addEventListener('change', (e) => {
		document.body.style.setProperty('--blendMode', e.target.value)
	})
})

dotSizeInput.addEventListener('input', (e) => {
	document.body.style.setProperty('--size', `${e.target.value}rem`)
	sizeLabel.innerText = `${e.target.value}rem`
})

contrastInput.addEventListener('input', (e) => {
	document.body.style.setProperty('--contrast', e.target.value)
	contrastLabel.innerText = e.target.value
})

invertInput.addEventListener('change', (e) => {
	const val = e.target.checked ? 1 : 0
	document.body.style.setProperty('--invert', val)
})

radiusInput.addEventListener('input', (e) => {
	document.body.style.setProperty('--dotRadius', `${e.target.value}%`)
	dotRadiusLabel.innerText = `${e.target.value}rem`
})
!
999px

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