cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

Quick-add: + add another resource

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

Quick-add: + add another resource

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
              <div class="container">
	<div class="background"></div>
	<div id="particles"></div>
	<div class="foreground"></div>
</div>
            
          
!
            
              // Colour Variables
$magenta : #a42b52;
$blue : #224154;

// this loops through and generates a random animation for each particle so that hte wallpaper feels more unpredictable and less boring - this loop is also used to assign the animation to the right particle
@for $i from 1 through 100 {
	@keyframes particle-#{$i} {
		0% { transform: translateX( 0px ) translateY(0vh); opacity: 1; };
		30% { transform: translateX( (random(80) - 40) + px ) translateY(-10vh); opacity: 0.9; };
		40% { transform: translateX( (random(80) - 40) + px ) translateY(-20vh); opacity: 0.8; };
		50% { transform: translateX( (random(80) - 40) + px ) translateY(-30vh); opacity: 0.7; };
		60% { transform: translateX( (random(80) - 40) + px ) translateY(-40vh); opacity: 0.6; };
		70% { transform: translateX( (random(80) - 40) + px ) translateY(-50vh); opacity: 0.5; };
		100% { transform: translateX( (random(80) - 40) + px ) translateY(-100vh); opacity: 0; };
	}
	.container #particles span:nth-child(#{$i}) { animation-name: particle-#{$i}; }
}

// let's make the body full width and height and hide any overflow, also let's give it a minimun width so that the images don't get too small, maybe in a future I will make this fully responssive
html,body {
	position: relative;
	height: 100%;
	background-color: $blue;
	text-align: center;
	overflow: hidden;
	min-width: 768px;
}

.container {
	position: relative;
	width: 100%;
	height: 100%;
	.background {
		position: absolute;
		top: 0;
		left: 0;
		right: 0;
		bottom: 0;
		width: 100%;
		height: 100%;
		background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/751678/my-illustration-background.png');
		background-position: center bottom;
		background-repeat: no-repeat;
		background-size: 100% auto;
		z-index: 0;
	}
	#particles {
		position: absolute;
		top:0;
		right:0;
		bottom: 0;
		left: 0;
		width: 100%;
		height: 100%;
		z-index: 1;
		span {
			display: inline-block;
			position: absolute;
			bottom: 0%;
			border-radius: 50%;
			background-color: $magenta;
			opacity: 1;
			box-shadow: 0px 0px 10px 5px rgba(164, 43, 82, 1);
			transform: translateX(0%) translateY(0%);
			animation-iteration-count: infinite;
			animation-timing-function: linear;
		}
	}
	.foreground {
		position: absolute;
		top: 0;
		left: 0;
		right: 0;
		bottom: 0;
		width: 100%;
		height: 100%;
		background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/751678/my-illustration-foreground.png');
		background-position: center bottom;
		background-repeat: no-repeat;
		background-size: 100% auto;
		z-index: 2;
	}
}

            
          
!
            
              // Let's define the required varibles such as the number of particles to be created and an array to hold the particles
const particleContainer = document.getElementById('particles');
const Nparticles = 100;
let particles = [];

// function to return a random number from a given min and max
function rand(min, max) {
	return Math.floor(Math.random() * (max - min)) + min;
}

// This constructor will generate the required information for each particle and it's html structure to be added to the document
function createParticle(i) {
	this.id = i;
	this.width = rand(1,20) + 'px';
	this.height = this.width;
	this.x = rand(10,90) + '%';
	this.delay = rand(1,60) + 's';
	this.duration = rand(10,60) + 's';
	this.html = '<span style=" width: '+this.width+'; height: '+this.height+'; left: '+this.x+'; animation-delay: '+this.duration+'; animation-duration: '+this.duration+'; "></span>';
}

// Let's loop through till we reach the max number of particles and save them to the array and append them to the document
while ( particles.length <= Nparticles ) {
	let Particle = new createParticle(particles.length);
	particles.push(Particle);
	particleContainer.innerHTML += Particle.html;
}

// Hope you liked it and that has inspired you to create something awesome
            
          
!
999px
Loading ..................

Console