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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <ul class="swinger"></ul>

              @import compass

  background: black
  margin: 0
  padding: 0
  width: 1px
  height: 0px
  margin: 0 auto
  position: relative
  min-height: 400px
  position: absolute
  top: 10px
  left: 50%
  width: 1px
  height: 1px
  list-style: none
  animation: swing alternate infinite ease-in-out

  display: block
  width: 1px
  background-color: rgba(255,255,255,.3)

  display: block
  width: 25px
  height: 25px
  +background(radial-gradient(rgb(187, 181, 199), rgb(115, 115, 116) 70%) -3px -5px)
  border: 1px solid #c8c8c8
  content: ' '
  position: relative
  +box-shadow(0 2px 2px 1px rgba(0,0,0,.2), -2px -2px 4px 3px rgba(0,0,0,.1) inset)

@keyframes swing
              var swinger = $(".swinger");

// Insert DOM
for (var i = 0; i < 15; i++) {
  var stringContainer = document.createElement('li');
  var string          = document.createElement('span');
  var ball            = document.createElement('span');
  stringContainer.className = 'no' + i;
  string.className          = "string";
  ball.className            = "ball";
  $(stringContainer).append(string, ball); 

var g        = 9.8; // gravity
var longOsc  = 15; // number of oscillations the longest pendulum performs in the cycle
var duration = 240; // duration of one cycle in seconds

// Calculate string heights
var height = [];
for (var j = 0; j < 15; j++) {
  length   = g * duration / Math.pow((2 * Math.PI * (longOsc + j)), 2); // equation to calculate string lengths for harmonic wave pendulum
var sizeCoeff = 150;
// Use harmonic pendulum equation to animate
var elements = $("li");
for (var k = 0; k < 15; k++) {
  var that = elements[k];
  var time = 2 * Math.PI * Math.sqrt(height[k] / g); // harmonic wave pendulum equation
  var size = sizeCoeff * height[k];
  $(".string", that).height(size * 10); // magic numbers for string length in px
  $(".ball", that)
    .css('left', (-1/2) * size);
  $(that).attr("style", "animation-duration: " + time + "s;");
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