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CSS

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JavaScript

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HTML 

              
                <!-- Image Slider Container -->
<div class="image-slider-container">
	<!-- Upper Image -->
	<div class="image background-image"></div>
	<!-- Lower Image -->
	<div class="image foreground-image"></div>

	<!-- Range Input -->
	<input id="range-slider" class="range-slider" name="slider" type="range" min="1" max="100" value="50" />

	<!-- Slider Control -->
	<div class="slider-control">
		<span class="slider-control-btn left"></span>
		<span class="slider-control-btn right"></span>
	</div>
</div>
!

CSS 

              
                // Variables
$background-color: #333;
$image-url: "https://cdn.pixabay.com/photo/2014/04/17/23/26/environmental-protection-326923_1280.jpg";

// Mixin
@mixin center() {
	display: flex;
	justify-content: center;
	align-items: center;
}

// Reset spacings
*::before,
*,
*::after {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

// General settings
body {
	display: flex;
	width: 100%;
	height: 100vh;
	justify-content: center;
	align-items: center;
	background: $background-color;
	perspective: 200px;
	box-shadow: inset 0 0 200px;
	animation: focusToSlider 500ms ease-out reverse;
}

// Image Slider Container
.image-slider-container {
	position: relative;
	width: 800px;
	height: 500px;
	border: 5px solid #fff;
	border-radius: 20px;
	overflow: hidden;
	transform: scale(1) rotate(0);
	transition: transform 300ms ease;

	transform-style: preserve-3d;

	.image {
		position: absolute;
		width: 100%;
		height: 100%;
		left: 0;
		top: 0;
		background-size: cover;
		background-position: center;

		&:nth-child(1) {
			background: url($image-url);
			filter: grayscale(100%) blur(2.5px);
		}

		&:nth-child(2) {
			background: url($image-url);
			filter: saturate(1.3);
			width: 50%;
		}
	}

	// Range Input
	.range-slider {
		position: absolute;
		@include center;
		width: 100%;
		height: 100%;
		margin: 0;
		background: rgba(#f2f2f2, 0.2);
		outline: none;
		-webkit-appearance: none;
		appearance: none;
		z-index: 2;
		transition: all 200ms linear;

		&:hover {
			background: rgba(#f2f2f2, 0.1);
		}

		&::-webkit-slider-thumb {
			-webkit-appearance: none;
			appearance: none;
			width: 6px;
			height: 800px;
			background: white;
			cursor: move;
			transition: all 300ms ease;
		}
	}
}

// Slider Control
.slider-control {
	z-index: 0;
	position: relative;
	display: block;
	width: 30px;
	height: 30px;
	border-radius: 50%;
	background: white;
	top: 50%;
	left: 50%;
	transform: translate(-60%, -50%);
	cursor: grab; // Changed cursor to "grab" for better user experience

	&::after,
	&::before {
		font-family: "Font Awesome 5 Free";
		font-weight: 900;
		position: absolute;
		top: 50%;
		transform: translateY(-50%);
	}

	&::after {
		content: "\f054"; // Right arrow icon
		right: 3px;
	}

	&::before {
		content: "\f053"; // Left arrow icon
		left: 3px;
	}
}

@keyframes focusToSlider {
	from {
		box-shadow: inset 0 0 200px;
	}

	to {
		box-shadow: inset 0 0 0 0;
	}
}
!

JS 

              
                // set vars
const imageSliderContainer = document.querySelector(".image-slider-container");
const slider = document.getElementById("range-slider");
const image = document.getElementsByClassName("image")[1];
const buttonRange = document.getElementsByClassName("slider-control")[0];

// Move slider and buttonRange at change of value
slider.addEventListener("input", (e) => {
	const sliderPos = e.target.value;

	image.style.width = sliderPos + "%";
	buttonRange.style.left = sliderPos + "%";
});

imageSliderContainer.addEventListener("mousemove", (e) => {
	const reduceMovement = (n) => n / 25;

	imageSliderContainer.animate(
		{
			transform: `scale(1.03) rotateX(${reduceMovement(
				e.movementY
			)}deg) rotateY(${reduceMovement(e.movementX)}deg)`
		},
		{ duration: 1200 }
	);
});

imageSliderContainer.addEventListener("mouseout", (e) => {
	imageSliderContainer.animate(
		{ transform: `scale(1) rotateX(0deg) rotateY(0deg)` },
		{ duration: 250, fill: "forwards" }
	);
});
!
999px

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