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    <label class="check-switch">
        <input type="checkbox" />
        <div class="track">
            <div class="knob"></div>
Check it


<p>Welcome, switchers. These are standard checkboxes styled to mimick a switch UI of our mobile forefathers. Defying reason, they are even <i>more</i> fun to toggle than a standard checkbox &mdash; even while using a mouse. Actually, mostly while using a mouse.</p>


<div id="main">
    <!-- Just a wrapper to demo font size inheritance -->
    <div style="font-size:.65em">
        <label class="check-switch">Pico<input type="checkbox" /><div class="track"><div class="knob"></div></div></label>

    <!-- Just a wrapper to demo font size inheritance -->
    <div style="font-size:1.25em">
      <label class="check-switch">Nano<input type="checkbox" /><div class="track"><div class="knob"></div></div></label>
    <!-- Just a wrapper to demo font size inheritance -->
    <div style="font-size:2em">
      <label class="check-switch">Jumbo<input type="checkbox" /><div class="track"><div class="knob"></div></div></label>


<p>Built using relative units, the size of a switch will be determined by the font-size of its parent container. When I get some time I'll roll this into a Sass/Bourbon mixin and call it a day.</p>
<p>Thanks and credit go to Bandar Raffa and <a href="">Lea Verou</a> who did most of the hard work. And to <a href="">@desandro</a> for being awesome and adding <a href="">Draggabilly</a>.</p>

<p>Questions/ideas/comments can go to <a href="">@kerns</a>. Happy switching.</p>



                @import "bourbon";

/* Define active switch color */
$check-switch-color: hsla(270,95%,70%,1);

/* Hide our checkboxes */
.check-switch input[type="checkbox"] { 
  position: absolute;
  opacity: 0;

label.check-switch {
  clear: both;
  color: #999;
 -webkit-tap-highlight-color: rgba(0,0,0,0);

/* Default Track */
.check-switch input[type="checkbox"] + .track {
  vertical-align: middle;
  width: 1.6588em;
  border: 1px solid rgba(0,0,0,.25);
  border-radius: 999px;
  background-color: rgba(0, 0, 0, 0.1);
  -webkit-transition-duration: .3s;
  -webkit-transition-property: background-color, box-shadow;
  box-shadow: inset 0 0 0 0px adjust-color($check-switch-color, $lightness: -30%, $alpha: -.25);
  margin: .5em 0 50px 0;
  cursor: pointer;

/* Default Track Checked */
.check-switch input[type="checkbox"]:checked + div {
  background-color: $check-switch-color;
  border: 1px solid adjust-color($check-switch-color, $lightness: -30%, $alpha: -.15);
  box-shadow: inset 0 0 0 .5em change-color($check-switch-color, $alpha: 0);

/* Default Knob */
.check-switch input[type="checkbox"] + div > div {
  left: 0;
  width: .95em;
  height: .95em;
  border-radius: inherit;
  background: #ffffff;
  -webkit-transition-timing-function: cubic-bezier(.54,1.85,.5,1);
  -webkit-transition-duration: 0.3s;
  -webkit-transition-property: transform, background-color, box-shadow;
  -moz-transition-timing-function: cubic-bezier(.54,1.85,.5,1);
  -moz-transition-duration: 0.3s;
  -moz-transition-property: transform, background-color;
  box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.3), 0px 0px 0 1px rgba(0, 0, 0, 0.2);
  margin-top: 0;

/* Default Knob Checked */
.check-switch input[type="checkbox"]:checked + div > div {
  left: 0.699em;
  background-color: #fff;
  box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.3), 0 0 0 1px adjust-color($check-switch-color, $lightness: -35%, $alpha: -.5);

/* Fixes drag performance */
.check-switch {
  -webkit-transition: none;

/* Demo page layout, not important */
body {-webkit-user-select: none; cursor: default; font: 22px "Helvetica Neue";color: rgba(0, 0, 0, 0.77);font-weight: 200;padding: 0 3em 5em 3em;background: -webkit-linear-gradient(top, #f2fbff 0%, #ffffff 64%) no-repeat;background: -moz-linear-gradient(top, #f2fbff 0%, #ffffff 64%) no-repeat;background: -ms-linear-gradient(top, #f2fbff 0%, #ffffff 64%) no-repeat;background: linear-gradient(to bottom, #f2fbff 0%, #ffffff 64%) no-repeat;} h1 {font-weight: 100;font-size: 3em;color: #999;} h2 { font-weight: 200; font-size: 22px; color: adjust-color($check-switch-color, $lightness: -20%);} h3 {font-weight: 200; font-size: 18px; color: rgba(0, 0, 0, 0.77); margin-top: 50px;} a:link {text-decoration:none; color: #f06;} a:visited {text-decoration:none; color: #f06;} a:hover {text-decoration:underline;} a:active {text-decoration:underline;} hr {border:0; border-top:1px solid #efefef} p {color:#555; max-width: 35em; margin-top: 1em;} #main {clear:both; padding:2em 2em 0;} h1 label {position:relative; top:.20em; display:block !important; width:1.8em}



                // external js

// use left/top for all positioning
Draggabilly.prototype.positionDrag = Draggabilly.prototype.setLeftTop;

$( function() {
  $('.knob').each( function( i, knob ) {
    var draggie = new Draggabilly( knob, {
      containment: true,
      axis: 'x'
    draggie.on( 'dragMove', onDragMove );
    draggie.on( 'dragEnd', onDragEnd );

function onDragMove() {
  var $knob = $( this.element );
  var $label = $knob.parents('label');
  // on initial drag move
  if ( !this.hasDragged ) {
    this.movePotential = $knob.parent().width() - $knob.width();
    $label.on( 'click', onLabelClickDragging );
    this.input = $label.find('input')[0];
    this.hasDragged = true;
  var isChecked = this.position.x > this.movePotential / 2;
  this.input.checked = isChecked;

// disable label clicks when dragging
function onLabelClickDragging( event ) {

function onDragEnd() {
  // clear out Draggabilly's position setting = '';
  delete this.hasDragged;  
  var $knob = $( this.element );
  var $label = $knob.parents('label');
  setTimeout( function() {
    $ 'click', onLabelClickDragging );