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HTML

              
                <h1>Visual affordance in checkbox controls</h1>
<h2>Unchecked &amp; Enabled</h2>
<div class="checkbox">
  <input type="checkbox" id="check_01">
  <label for="check_01"></label>
</div>

<h2>Unchecked &amp; Disabled</h2>
<p>'Lock' icon version. Nice but may get confused with 'secure'.</p>
<div class="checkbox disabled">
  <input type="checkbox" id="check_02" disabled>
  <label for="check_02"></label>
</div>

<h2>Checked &amp; Disabled</h2> <p>Alternative 'ban/not-allowed' styled version - more in keeping with not-allowed  cursor</p>
<div class="checkbox ban disabled checked">
  <input type="checkbox" id="check_03" checked disabled>
  <label for="check_03"></label>
</div>

<h2>SPECIAL</h2>
<sp>With label-like 'off' and 'on' indicators, populated in this case using ::before/::after content</p>
<div class="checkbox checked">
  <input type="checkbox" id="check_04">
  <label for="check_04"><span class="indicators" data-label-off="off" data-label-on="on"></span></label>
</div>
<p>Go forth, code Ninja, and play&hellip;</p>

              
            
!

CSS

              
                // THIS ISN'T ORGANISED OR OPTIMISED VERY WELL. SORRY ABOUT THAT, FOLKS!

@import "compass/css3";
*, *:after, *:before{
  @include box-sizing(border-box);
}
$prim : hsla(150, 100%, 50%, 1);
$dark : hsla(150, 100%, 25%, 1);
html {
  font-size: 16px;
}
body{
  font: 400 normal normal 100%/1.5 Nunito, sans-serif;
  text-align: center;
  background: $prim;
  padding: 50px;
}

h1, h2 {
  font-weight: 700;
}
h1 {
  margin: 0 0 3rem;
}
h2 {
  margin: 0;
}
p {
  margin: 0 0 1.5rem;
}
/*=====================*/
.checkbox {
  position: relative;
  display: block;
  margin: 1rem auto 3rem;
  label {
    width: 90px;
    height: 42px;
    background: lighten($prim, 35%);
    position: relative;
    display: inline-block;
    @include border-radius(46px);
    @include transition(.25s);
    box-shadow: inset 0 3px 3px hsla(150, 100%, 0%, 0.25);
    &:after, 
    &:before{
      content: '';
      text-shadow: 0px 0px 2px hsla(0, 0%, 0%, 0.25);
      position: absolute;
      width: 50px;
      height: 50px;
      @include border-radius(100%);
      left: 0;
      top: -5px;
      background: #fff;
      @include box-shadow(0 0 5px rgba(0,0,0,.2));
      @include transition(.25s);
    }
    &:before{
      content: '\f08d';
      content: '\f00d';
      font-family: FontAwesome;
      font-weight: normal;
      font-size: 24px;
      line-height: 50px;
      color: $prim;
      color: hsla(0, 100%, 50%, 1);
      z-index: 1;
      overflow: hidden;
       //@include animation(.25s pin-off forwards)
    }
  }
  input{
    position: absolute;
    right: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    opacity: 0;
   cursor: pointer;
    &:not(:checked) ~ label .indicators::before {
      color: red;
    }
    &:checked ~ label .indicators::after {
      color: blue;
    }
    &:not(:disabled):hover + label:after {
      @include box-shadow(0 2px 15px 0 rgba(0, 0, 0, .2), 0 3px 8px 0 rgba(0, 0, 0, .15))
    }
    &:checked + label{
      background: $dark;
      &:after, 
      &:before{
        content: "\f00c"; // tick (check)
        background: $prim;
        color: #fff;
        left: 40px;
      }
      &:before{
        @include animation(.25s pin-on  forwards);
      }
    }   
  }  
}
/*
@include keyframes(pin-on){
  80%{ line-height: 150px;}
  85%{ line-height: 1px; @include rotate(45deg); opacity:0}
  100%{ line-height: 50px; opacity:1; @include rotate(45deg)}
}
@include keyframes(pin-off){
   0%{@include rotate(45deg)}
  80%{ line-height: 150px; }
  85%{ line-height: 1px; opacity:0}
  100%{ line-height: 50px; opacity:1; }
}
*/
.checkbox {
  position: relative;
  width: 100px;
}
.checkbox.disabled::after {
	content: "\f023";
	position: absolute;
	top: 10px;
	left: 66px;
	font-family: FontAwesome;
  color: hsla(0, 0%, 0%, 0.5);
  text-shadow: 0px 1px 1px hsla(0, 0%, 0%, 0.25);
}
// OR this version!
.checkbox.ban.disabled::after {
  content: '\f05e';
}
.checkbox.disabled.checked::after {
	left: 24px;
  color: hsla(0, 0%, 100%, 0.75);
}
.disabled {
  input {
    cursor: not-allowed;
  }
}
small {
  display: block;
  font-size: 12px;
  font-weight: normal;
}
.indicators {
  text-transform: uppercase;
  font-weight: bold;
  &::before,
  &::after {
    position: absolute;
    line-height: 40px;
    cursor: pointer;
  }
  &::before {
    left: -50px;
    text-align: right;
    content: attr(data-label-off);
  }
  &::after {
    right: -50px;
    text-align: left;
    content: attr(data-label-on);
  }
}
input:checked {
  & ~ .indicators {
    
  }
}
              
            
!

JS

              
                /* NEED TO DO/CHECK:
 - Code tidy
 - Accessibility
 - Varieties of display
 - Text direction (RTL) agnostic
*/
              
            
!
999px

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