.toggle__container
	.toggle__label.toggle__label--light Light
	.toggle
	.toggle__label.toggle__label--dark Dark

.card
	.card__header
		.title
			.title__icon
			.title__wordmark Funky Notifications
		.action__container
			button.action.action--like
				svg.action__icon(xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true")
					path(d="M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z")
				.action__label 0
	.card__body Click the icon to generate a dynamic animation behind the notification.
View Compiled
html {
	--gray-darkest: #24292e;
	--gray-darker: #2f363d;
	--gray-dark: #586069;
	--gray-light: #959da5;
	--gray-lighter: #e1e4e8;
	--gray-lightest: #fafbfc;
	
	--black: #000000;
	--white: #FFFFFF;
	
	--blue: #0AAFFF;
	--purple: #7551E9;
	--orange: #FF7D51;
	--pink: #ED63D2;
	--green: #2DCA73;
	--yellow: #FFC212;
	
	--bg: var(--gray-lighter);
	--text-color: var(--gray-darkest);
	--component-bg: var(--white);
	--component-border: var(--gray-lighter);
}

html {
	font-size: 62.5%;
	box-sizing: border-box;
}

*, *:before, *:after {
	box-sizing: border-box;
}

html, body {
	height: 100%;
	width: 100%;
}

body {
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	background: var(--bg);
	color: var(--text-color);
	font-size: 2rem;
	font-family: 'Nunito Sans', system-ui;
	line-height: 1.5;
	padding-left: 1rem;
	padding-right: 1rem;
}

.card {
	background: var(--component-bg);
	width: 100%;
	max-width: 500px;
	border-radius: 1.6rem;
	border: 1px solid var(--component-border);
	box-shadow: 0px 2px 5px rgba(black, .05), 0px 8px 16px rgba(black, .05);
	position: relative;
	margin-bottom: 2.4rem;
	z-index: 1;
	transition: all .2s ease-out 0s;
	&__header {
		display: flex;
		align-items: center;
		justify-content:space-between;
		padding-top: 2rem;
		padding-bottom: 1rem;
	}
	&__body {
		padding-top: 1rem;
		padding-bottom: 2rem;
	}
	&__header, &__body {
		padding-left: 2rem;
		padding-right: 2rem;
	}
}

.title {
	display: flex;
	align-items: center;
	&__icon, &__wordmark {
		display: inline-block;
	}
	&__icon {
		$size: 1.2em;
		width: $size;
		height: $size;
		background: var(--blue);
		margin-right: 1rem;
		border-radius: 5px;
	}
	&__wordmark {
		font-weight: 700;
	}
}

.action {
	$active-color: var(--pink);
	cursor: pointer;
	user-select: none;
	text-align: center;
	line-height: 1;
	transition: all .1s ease-out 0s;
	position: relative;
	z-index: 200;
	background: none;
	border: 0;
	&:before {
		$size: 0px;
		content: '';
		position: absolute;
		background: var(--pink);
		opacity: .2;
		width: $size;
		height: $size;
		display: block;
		top: 50%;
		left: 50%;
		transform: translate(-50%, -50%);
		z-index: 100;
		border-radius: 50%;
		transition: all .2s ease-out 0s;
	}
	&__icon {
		$size: 2rem;
		width: $size;
		height: $size;
		color: var(--text-color);
	}
	&__label {
		font-size: 1.6rem;
		color: var(--gray-light);
	}
	&__container {
		display: flex;
		align-items: center;
		justify-content: flex-end;
	}
	&:hover, &:focus {
		color: $active-color;
		&:before {
			$size: 45px;
			width: $size;
			height: $size;
			transition: all .2s ease-out 0s;
		}
	}
	&:active, &:focus {
		outline: 0;
		.action__icon {
			color: $active-color;
			fill: $active-color;
		}
		.action__label {
			color: $active-color;
		}
	}
}

.animation {
	$size: 300px;
	z-index: 0;
	position: fixed;
	top: 50%;
	left: 50%;
	width: $size*1.6;
	height: $size*1.3;
	&__item {
		$size: 2rem;
		width: $size;
		height: $size;
		position: absolute;
		animation: centerIn 1s ease-out forwards;
	}
}

@keyframes centerIn {
	from {
		left: 50%;
		top:50%;
		bottom: 50%;
		right: 50%;
		transform: translate(-50%, -50%) rotate(-315deg);
		opacity: 1;
	}
	to {
		transform: initial;
		opacity: 0;
	}
}

.toggle {
	$unit: 1.5rem;
	z-index: 2;
	width: $unit*3;
	height: $unit;
	position: relative;
	background: var(--black);
	border-radius: 999px;
	cursor: pointer;
	display: inline-block;
	margin: auto $unit;
	&__label {
		font-size: 1.2rem;
		display: inline-block;
		text-transform: uppercase;
		letter-spacing: .0625em;
		font-weight: 700;
		&--dark {
			color: var(--gray-dark);
		}
		&--light {
			color: var(--gray-darkest);
		}
	}
	&:before {
		position: absolute;
		border-radius: 999px;
		left: 0;
		top: 50%;
		transform: translate(-50%, -50%);
		transform-origin: center;
		content: '';
		width: $unit*1.5;
		height: $unit*1.5;
		background: var(--gray-dark);
		transition: all .2s ease 0s;
	}
	&__container {
		text-align: center;
		margin: 0 auto 9rem auto;
		user-select: none;
		&.active {
			.toggle:before {
				left: 100%;
			}
			.toggle__label {
				&--light {
					color: var(--gray-dark);
				}
				&--dark {
					color: var(--gray-lightest);
				}
			}
		}
	}
}
View Compiled
console.clear();

// Like Button + increasing count
const likeButton = document.querySelectorAll('.action--like');

likeButton.forEach(button => {
	button.addEventListener('click', () => {
		const countNum = button.parentNode.querySelector('.action__label');
		increaseVal(countNum);
		animationItem();
		button.style.transform = 'scale(1.2)';
		const rotateDeg = getRange(10);
		button.parentNode.parentNode.parentNode.style.transform = `rotate(${rotateDeg}deg)`;
		setTimeout(() => {
			button.style.transform = '';
			button.parentNode.parentNode.parentNode.style.transform = '';
			button.blur();
		}, 300)
	})
})

const increaseVal = (target) => {
	var value = parseInt(target.innerHTML, 10);
	value = isNaN(value) ? 0 : value;
	value++;
	target.innerHTML = value;
}

// Create Shape Animation
const colorClasses = ['blue', 'purple', 'orange', 'pink', 'green', 'yellow'];

const getRange = x => {
	const val = Math.floor(Math.random() * x);
	return val;
}

const animationItem = () => {
	const newContainer = document.createElement('div');
	const randomRotate = getRange(360);
	newContainer.classList = 'animation';
	newContainer.style.transform = `translate(-50%,-50%) scale(1.5) rotate(${randomRotate}deg)`;
	
	// Random positioning of each shape
	function randomPos(a) {
		a.style.top = `${getRange(100)}%`;
		a.style.right = `${getRange(100)}%`;
		a.style.left = `${getRange(100)}%`;
		a.style.bottom = `${getRange(100)}%`;
	}
	
	// Random number of shapes generated
	const maxNumberOfItems = 20;
	const minNumberOfItems = 10;
	const randomNumberOfItems = Math.floor(Math.random() * maxNumberOfItems + minNumberOfItems);
	
	for(var i = 0; randomNumberOfItems > i; i++) {
		// Random 0 - 4, generate circle, triangle, square, heart, star
		let randomShapeNumber = getRange(4);
		let randomClassNumber = getRange(6);
		const newItem = document.createElement('div');
		newItem.classList = 'animation__item';
		randomPos(newItem)
		if(randomShapeNumber == 0) {
			newItem.innerHTML = `
				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="var(--${colorClasses[randomClassNumber]})" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
					<circle cx="12" cy="12" r="10"></circle>
				</svg>`;
		} else if(randomShapeNumber == 1) {
			newItem.innerHTML = `
				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="var(--${colorClasses[randomClassNumber]})" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
     <path d="M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z"></path>
    </svg>`;
		} else if(randomShapeNumber == 2) {
			newItem.innerHTML = `
				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="var(--${colorClasses[randomClassNumber]})" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
					<rect x="3" y="3" width="18" height="18" rx="2" ry="2"></rect>
				</svg>`;
		} else if(randomShapeNumber == 3) {
			newItem.innerHTML = `
			<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="var(--${colorClasses[randomClassNumber]})" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
				<polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2"></polygon>
			</svg>
			`;
		} else {
			newItem.innerHTML = `
				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="var(--${colorClasses[randomClassNumber]})" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
					<path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"></path>
				</svg>`;
		}
		newContainer.appendChild(newItem);
	}
	
	document.body.appendChild(newContainer);
	setTimeout(() => {
		newContainer.remove();
	}, 1100)
}

// Toggle theme
const toggle = document.querySelector('.toggle');
const toggleContainer = document.querySelector('.toggle__container');
const root = document.documentElement;

toggle.addEventListener('click', function() {
	if(toggleContainer.classList.contains('active')) {
		toggleContainer.classList.remove('active');
		root.style.setProperty('--bg', `var(--gray-lighter)`);
		root.style.setProperty('--text-color', `var(--gray-darkest)`);
		root.style.setProperty('--component-bg', `var(--white)`);
		root.style.setProperty('--component-border', `var(--gray-lighter)`);
	} else {
		toggleContainer.classList.add('active');
		root.style.setProperty('--bg', `var(--gray-darker)`);
		root.style.setProperty('--text-color', `var(--gray-lightest)`);
		root.style.setProperty('--component-bg', `var(--gray-darkest)`);
		root.style.setProperty('--component-border', `var(--gray-darkest)`);
	}
})
View Compiled
Run Pen

External CSS

  1. https://fonts.googleapis.com/css?family=Nunito+Sans:400,700

External JavaScript

  1. https://codepen.io/ryanparag/pen/pxVOpP