Pen Settings

HTML

CSS

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.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

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.

+ add another resource

Behavior

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.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <div id="particles">
  <div class="overlay"></div>
  <div id="intro">
    <h1>3D Animated<br>background</h1>
    <p>Background particle systems</p>
  </div>
</div>
              
            
!

CSS

              
                /*
CSS Reset
https://meyerweb.com/eric/tools/css/reset/
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
  display: block;
}
body {
  line-height: 1;
}
ol, ul {
  list-style: none;
}
blockquote, q {
  quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
  content: '';
  content: none;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* particleground demo */

* {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

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

body {
  background: #0074D9;
  font-family: 'Montserrat', sans-serif;
  color: #fff;
  line-height: 1.3;
  -webkit-font-smoothing: antialiased;
}

#particles {
  background: url('http://arnaudel.perso.neuf.fr/Payekhali/Fonds/1280/AS11-40-5873.jpg') top center;
  background-size: cover;
  background-repeat: no-repeat;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#intro {
  position: absolute;
  left: 0;
  top: 50%;
  padding: 0 20px;
  width: 100%;
  text-align: center;
}
.overlay {
  position: fixed;
  background: rgba(0,0,0,0.5);
  top:0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}
h1 {
  text-transform: uppercase;
  font-size: 85px;
  font-weight: 700;
  letter-spacing: 0.015em;
}
h1::after {
  content: '';
  width: 80px;
  display: block;
  background: #fff;
  height: 10px;
  margin: 30px auto;
  line-height: 1.1;
}
p {
  margin: 0 0 30px 0;
  font-size: 24px;
}
.btn {
  display: inline-block;
  padding: 15px 30px;
  border: 2px solid #fff;
  text-transform: uppercase;
  letter-spacing: 0.015em;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  text-decoration: none;
  -webkit-transition: all 0.4s;
     -moz-transition: all 0.4s;
       -o-transition: all 0.4s;
          transition: all 0.4s;
}
.btn:hover {
  color: #005544;
  border-color: #005544;
}

@media only screen and (max-width: 1000px) {
  h1 {
    font-size: 70px;
  }
}

@media only screen and (max-width: 800px) {
  h1 {
    font-size: 48px;
  }
  h1::after {
    height: 8px;
  }
}

@media only screen and (max-width: 568px) {
  #intro {
    padding: 0 10px;
  }
  h1 {
    font-size: 30px;
  }
  h1::after {
    height: 6px;
  }
  p {
    font-size: 18px;
  }
  .btn {
    font-size: 16px;
  }
}

@media only screen and (max-width: 320px) {
  h1 {
    font-size: 28px;
  }
  h1::after {
    height: 4px;
  }
}
              
            
!

JS

              
                /*
 * @author  - @sebagarcia
 * @version 1.1.0
 * Inspired & based on "Particleground" by Jonathan Nicol
 */

;(function(window, document) {
  "use strict";
  var pluginName = 'particleground';

  // http://youmightnotneedjquery.com/#deep_extend
  function extend(out) {
    out = out || {};
    for (var i = 1; i < arguments.length; i++) {
      var obj = arguments[i];
      if (!obj) continue;
      for (var key in obj) {
        if (obj.hasOwnProperty(key)) {
          if (typeof obj[key] === 'object')
            deepExtend(out[key], obj[key]);
          else
            out[key] = obj[key];
        }
      }
    }
    return out;
  };

  var $ = window.jQuery;

  function Plugin(element, options) {
    var canvasSupport = !!document.createElement('canvas').getContext;
    var canvas;
    var ctx;
    var particles = [];
    var raf;
    var mouseX = 0;
    var mouseY = 0;
    var winW;
    var winH;
    var desktop = !navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry|BB10|mobi|tablet|opera mini|nexus 7)/i);
    var orientationSupport = !!window.DeviceOrientationEvent;
    var tiltX = 0;
    var pointerX;
    var pointerY;
    var tiltY = 0;
    var paused = false;

    options = extend({}, window[pluginName].defaults, options);

    /**
     * Init
     */
    function init() {
      if (!canvasSupport) { return; }

      //Create canvas
      canvas = document.createElement('canvas');
      canvas.className = 'pg-canvas';
      canvas.style.display = 'block';
      element.insertBefore(canvas, element.firstChild);
      ctx = canvas.getContext('2d');
      styleCanvas();

      // Create particles
      var numParticles = Math.round((canvas.width * canvas.height) / options.density);
      for (var i = 0; i < numParticles; i++) {
        var p = new Particle();
        p.setStackPos(i);
        particles.push(p);
      };

      window.addEventListener('resize', function() {
        resizeHandler();
      }, false);

      document.addEventListener('mousemove', function(e) {
        mouseX = e.pageX;
        mouseY = e.pageY;
      }, false);

      if (orientationSupport && !desktop) {
        window.addEventListener('deviceorientation', function () {
          // Contrain tilt range to [-30,30]
          tiltY = Math.min(Math.max(-event.beta, -30), 30);
          tiltX = Math.min(Math.max(-event.gamma, -30), 30);
        }, true);
      }

      draw();
      hook('onInit');
    }

    /**
     * Style the canvas
     */
    function styleCanvas() {
      canvas.width = element.offsetWidth;
      canvas.height = element.offsetHeight;
      ctx.fillStyle = options.dotColor;
      ctx.strokeStyle = options.lineColor;
      ctx.lineWidth = options.lineWidth;
    }

    /**
     * Draw particles
     */
    function draw() {
      if (!canvasSupport) { return; }

      winW = window.innerWidth;
      winH = window.innerHeight;

      // Wipe canvas
      ctx.clearRect(0, 0, canvas.width, canvas.height);

      // Update particle positions
      for (var i = 0; i < particles.length; i++) {
        particles[i].updatePosition();
      };
      // Draw particles
      for (var i = 0; i < particles.length; i++) {
        particles[i].draw();
      };

      // Call this function next time screen is redrawn
      if (!paused) {
        raf = requestAnimationFrame(draw);
      }
    }

    /**
     * Add/remove particles.
     */
    function resizeHandler() {
      // Resize the canvas
      styleCanvas();

      var elWidth = element.offsetWidth;
      var elHeight = element.offsetHeight;

      // Remove particles that are outside the canvas
      for (var i = particles.length - 1; i >= 0; i--) {
        if (particles[i].position.x > elWidth || particles[i].position.y > elHeight) {
          particles.splice(i, 1);
        }
      };

      // Adjust particle density
      var numParticles = Math.round((canvas.width * canvas.height) / options.density);
      if (numParticles > particles.length) {
        while (numParticles > particles.length) {
          var p = new Particle();
          particles.push(p);
        }
      } else if (numParticles < particles.length) {
        particles.splice(numParticles);
      }

      // Re-index particles
      for (i = particles.length - 1; i >= 0; i--) {
        particles[i].setStackPos(i);
      };
    }

    /**
     * Pause particle system
     */
    function pause() {
      paused = true;
    }

    /**
     * Start particle system
     */
    function start() {
      paused = false;
      draw();
    }

    /**
     * Particle
     */
    function Particle() {
      this.stackPos;
      this.active = true;
      this.layer = Math.ceil(Math.random() * 3);
      this.parallaxOffsetX = 0;
      this.parallaxOffsetY = 0;
      // Initial particle position
      this.position = {
        x: Math.ceil(Math.random() * canvas.width),
        y: Math.ceil(Math.random() * canvas.height)
      }
      // Random particle speed, within min and max values
      this.speed = {}
      switch (options.directionX) {
        case 'left':
          this.speed.x = +(-options.maxSpeedX + (Math.random() * options.maxSpeedX) - options.minSpeedX).toFixed(2);
          break;
        case 'right':
          this.speed.x = +((Math.random() * options.maxSpeedX) + options.minSpeedX).toFixed(2);
          break;
        default:
          this.speed.x = +((-options.maxSpeedX / 2) + (Math.random() * options.maxSpeedX)).toFixed(2);
          this.speed.x += this.speed.x > 0 ? options.minSpeedX : -options.minSpeedX;
          break;
      }
      switch (options.directionY) {
        case 'up':
          this.speed.y = +(-options.maxSpeedY + (Math.random() * options.maxSpeedY) - options.minSpeedY).toFixed(2);
          break;
        case 'down':
          this.speed.y = +((Math.random() * options.maxSpeedY) + options.minSpeedY).toFixed(2);
          break;
        default:
          this.speed.y = +((-options.maxSpeedY / 2) + (Math.random() * options.maxSpeedY)).toFixed(2);
          this.speed.x += this.speed.y > 0 ? options.minSpeedY : -options.minSpeedY;
          break;
      }
    }

    /**
     * Draw particle
     */
    Particle.prototype.draw = function() {
      // Draw circle
      ctx.beginPath();
      ctx.arc(this.position.x + this.parallaxOffsetX, this.position.y + this.parallaxOffsetY, options.particleRadius / 2, 0, Math.PI * 2, true);
      ctx.closePath();
      ctx.fill();

      // Draw lines
      ctx.beginPath();
      // Iterate over all particles which are higher in the stack than this one
      for (var i = particles.length - 1; i > this.stackPos; i--) {
        var p2 = particles[i];

        // Pythagorus theorum to get distance between two points
        var a = this.position.x - p2.position.x
        var b = this.position.y - p2.position.y
        var dist = Math.sqrt((a * a) + (b * b)).toFixed(2);

        // If the two particles are in proximity, join them
        if (dist < options.proximity) {
          ctx.moveTo(this.position.x + this.parallaxOffsetX, this.position.y + this.parallaxOffsetY);
          if (options.curvedLines) {
            ctx.quadraticCurveTo(Math.max(p2.position.x, p2.position.x), Math.min(p2.position.y, p2.position.y), p2.position.x + p2.parallaxOffsetX, p2.position.y + p2.parallaxOffsetY);
          } else {
            ctx.lineTo(p2.position.x + p2.parallaxOffsetX, p2.position.y + p2.parallaxOffsetY);
          }
        }
      }
      ctx.stroke();
      ctx.closePath();
    }

    /**
     * update particle position
     */
    Particle.prototype.updatePosition = function() {
      if (options.parallax) {
        if (orientationSupport && !desktop) {
          // Map tiltX range [-30,30] to range [0,winW]
          var ratioX = (winW - 0) / (30 - -30);
          pointerX = (tiltX - -30) * ratioX + 0;
          // Map tiltY range [-30,30] to range [0,winH]
          var ratioY = (winH - 0) / (30 - -30);
          pointerY = (tiltY - -30) * ratioY + 0;
        } else {
          pointerX = mouseX;
          pointerY = mouseY;
        }
        // Calculate parallax offsets
        this.parallaxTargX = (pointerX - (winW / 2)) / (options.parallaxMultiplier * this.layer);
        this.parallaxOffsetX += (this.parallaxTargX - this.parallaxOffsetX) / 10; // Easing equation
        this.parallaxTargY = (pointerY - (winH / 2)) / (options.parallaxMultiplier * this.layer);
        this.parallaxOffsetY += (this.parallaxTargY - this.parallaxOffsetY) / 10; // Easing equation
      }

      var elWidth = element.offsetWidth;
      var elHeight = element.offsetHeight;

      switch (options.directionX) {
        case 'left':
          if (this.position.x + this.speed.x + this.parallaxOffsetX < 0) {
            this.position.x = elWidth - this.parallaxOffsetX;
          }
          break;
        case 'right':
          if (this.position.x + this.speed.x + this.parallaxOffsetX > elWidth) {
            this.position.x = 0 - this.parallaxOffsetX;
          }
          break;
        default:
          // If particle has reached edge of canvas, reverse its direction
          if (this.position.x + this.speed.x + this.parallaxOffsetX > elWidth || this.position.x + this.speed.x + this.parallaxOffsetX < 0) {
            this.speed.x = -this.speed.x;
          }
          break;
      }

      switch (options.directionY) {
        case 'up':
          if (this.position.y + this.speed.y + this.parallaxOffsetY < 0) {
            this.position.y = elHeight - this.parallaxOffsetY;
          }
          break;
        case 'down':
          if (this.position.y + this.speed.y + this.parallaxOffsetY > elHeight) {
            this.position.y = 0 - this.parallaxOffsetY;
          }
          break;
        default:
          // If particle has reached edge of canvas, reverse its direction
          if (this.position.y + this.speed.y + this.parallaxOffsetY > elHeight || this.position.y + this.speed.y + this.parallaxOffsetY < 0) {
            this.speed.y = -this.speed.y;
          }
          break;
      }

      // Move particle
      this.position.x += this.speed.x;
      this.position.y += this.speed.y;
    }

    /**
     * Setter: particle stacking position
     */
    Particle.prototype.setStackPos = function(i) {
      this.stackPos = i;
    }

    function option (key, val) {
      if (val) {
        options[key] = val;
      } else {
        return options[key];
      }
    }

    function destroy() {
      console.log('destroy');
      canvas.parentNode.removeChild(canvas);
      hook('onDestroy');
      if ($) {
        $(element).removeData('plugin_' + pluginName);
      }
    }

    function hook(hookName) {
      if (options[hookName] !== undefined) {
        options[hookName].call(element);
      }
    }

    init();

    return {
      option: option,
      destroy: destroy,
      start: start,
      pause: pause
    };
  }

  window[pluginName] = function(elem, options) {
    return new Plugin(elem, options);
  };

  window[pluginName].defaults = {
    minSpeedX: 0.1,
    maxSpeedX: 0.7,
    minSpeedY: 0.1,
    maxSpeedY: 0.7,
    directionX: 'center', // 'center', 'left' or 'right'. 'center' = dots bounce off edges
    directionY: 'center', // 'center', 'up' or 'down'. 'center' = dots bounce off edges
    density: 10000, // How many particles will be generated: one particle every n pixels
    dotColor: '#666666',
    lineColor: '#666666',
    particleRadius: 7, // Dot size
    lineWidth: 1,
    curvedLines: false,
    proximity: 100, // How close two dots need to be before they join
    parallax: true,
    parallaxMultiplier: 5, // The lower the number, the more extreme the parallax effect
    onInit: function() {},
    onDestroy: function() {}
  };

  // nothing wrong with hooking into jQuery if it's there...
  if ($) {
    $.fn[pluginName] = function(options) {
      if (typeof arguments[0] === 'string') {
        var methodName = arguments[0];
        var args = Array.prototype.slice.call(arguments, 1);
        var returnVal;
        this.each(function() {
          if ($.data(this, 'plugin_' + pluginName) && typeof $.data(this, 'plugin_' + pluginName)[methodName] === 'function') {
            returnVal = $.data(this, 'plugin_' + pluginName)[methodName].apply(this, args);
          }
        });
        if (returnVal !== undefined){
          return returnVal;
        } else {
          return this;
        }
      } else if (typeof options === "object" || !options) {
        return this.each(function() {
          if (!$.data(this, 'plugin_' + pluginName)) {
            $.data(this, 'plugin_' + pluginName, new Plugin(this, options));
          }
        });
      }
    };
  }

})(window, document);

/**
 * requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel
 * @see: http://paulirish.com/2011/requestanimationframe-for-smart-animating/
 * @see: http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating
 * @license: MIT license
 */
(function() {
    var lastTime = 0;
    var vendors = ['ms', 'moz', 'webkit', 'o'];
    for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
      window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
      window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame']
                                 || window[vendors[x]+'CancelRequestAnimationFrame'];
    }

    if (!window.requestAnimationFrame)
      window.requestAnimationFrame = function(callback, element) {
        var currTime = new Date().getTime();
        var timeToCall = Math.max(0, 16 - (currTime - lastTime));
        var id = window.setTimeout(function() { callback(currTime + timeToCall); },
          timeToCall);
        lastTime = currTime + timeToCall;
        return id;
      };

    if (!window.cancelAnimationFrame)
      window.cancelAnimationFrame = function(id) {
        clearTimeout(id);
      };
}());

document.addEventListener('DOMContentLoaded', function () {
  particleground(document.getElementById('particles'), {
    dotColor: '#eee',
    lineColor: '#eee'
  });
  var intro = document.getElementById('intro');
  intro.style.marginTop = - intro.offsetHeight / 2 + 'px';
}, false);

              
            
!
999px

Console