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HTML

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CSS

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HTML 

              
                <h2>Weekly Coding Challenge #16 - Notifications</h2>
<div class="notification-container" id="notification-container">
	<div class="notification notification-info">
		<strong>Info:</strong> Lorem ipsum dolor sit amet.
	</div>

	<div class="notification notification-success">
		<strong>Success:</strong> Lorem ipsum dolor sit amet consectetur adipisicing elit.
	</div>

	<div class="notification notification-warning">
		<strong>Warning:</strong> Lorem ipsum dolor sit amet, consectetur adipisicing.
	</div>

	<div class="notification notification-danger">
		<strong>Danger:</strong> Lorem ipsum dolor sit amet consectetur.
	</div>
</div>

<footer>
	<p>
		Created with <i class="fa fa-heart"></i> by
		<a target="_blank" href="https://florin-pop.com">Florin Pop</a>
		- Read how I created this and how you can join the challenge
		<a target="_blank" href="https://www.florin-pop.com/blog/2019/06/how-to-create-a-notification-box">here</a>
	</p>
</footer>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css?family=Roboto:400,500&display=swap');

* {
	box-sizing: border-box;
}

body {
	background-image: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
	
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;

	min-height: 100vh;
	font-family: 'Roboto', sans-serif;
	margin: 0;
}

h2 {
	text-align: center;
}

.notification-container {
	position: fixed;
	top: 15px;
	right: 15px;
	width: 500px;
	max-width: calc(100% - 30px);
}

.notification {
	background-color: #fff;
	border-radius: 5px;
	box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
	color: #fff;
	font-size: 16px;
	padding: 15px 20px;
	line-height: 20px;
	margin-bottom: 15px;
	animation: grow 0.5s ease-in forwards;
}

@keyframes grow {
	from {
		opacity: 0;
		transform: scale(0.8);
	}
	to {
		opacity: 1;
		transform: scale(1);
	}
}

.notification.hide {
	animation: shrink 0.3s ease-out forwards;
}

@keyframes shrink {
	to {
		opacity: 0;
		transform: scale(0.8);
	}
}

.notification strong {
	font-size: 12px;
	line-height: 20px;
	letter-spacing: 0.5px;
	text-transform: uppercase;
}

.notification-info {
	background-color: #00cae3;
}

.notification-success {
	background-color: #55b559;
}

.notification-warning {
	background-color: #ff9e0f;
}

.notification-danger {
	background-color: #f55145;
}

footer {
    background-color: #222;
    color: #fff;
    font-size: 14px;
    bottom: 0;
    position: fixed;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 999;
}

footer p {
    margin: 10px 0;
}

footer i {
    color: red;
}

footer a {
    color: #3c97bf;
    text-decoration: none;
}
!

JS 

              
                const notificationContainer = document.getElementById('notification-container');
const NOTIFICATION_TYPES = {
	INFO: 'info',
	SUCCESS: 'success',
	WARNING: 'warning',
	DANGER: 'danger'
}

function addNotification(type, text) {
    // create the DIV and add the required classes
    const newNotification = document.createElement('div');
    newNotification.classList.add('notification', `notification-${type}`);

    const innerNotification = `
		<strong>${type}:</strong> ${text}
	`;

    // insert the inner elements
    newNotification.innerHTML = innerNotification;

    // add the newNotification to the container
    notificationContainer.appendChild(newNotification);

    return newNotification;
}

function removeNotification(notification) {
	notification.classList.add('hide');

	// remove notification from the DOM after 0.5 seconds
	setTimeout(() => {
		notificationContainer.removeChild(notification);
	}, 500);
}

// adding and removing notification for DEMO purposes
const info = addNotification(NOTIFICATION_TYPES.INFO, 'Info text added');
setTimeout(() => {
	removeNotification(info);
}, 5000);

setTimeout(() => {
	const success = addNotification(NOTIFICATION_TYPES.SUCCESS, 'You are the boss!');
	setTimeout(() => {
		removeNotification(success);
	}, 5000);
}, 1000);

setTimeout(() => {
	const warning = addNotification(NOTIFICATION_TYPES.WARNING, 'Be careful!');
	setTimeout(() => {
		removeNotification(warning);
	}, 5000);
}, 2200);

setTimeout(() => {
	const danger = addNotification(NOTIFICATION_TYPES.DANGER, 'Noooooooo!');
	setTimeout(() => {
		removeNotification(danger);
	}, 5000);
}, 3700);
!
999px

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