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HTML 

              
                mixin model
  section&attributes(attributes)= name
    .checkbox
      input(type='checkbox')
      label
- var x  =1
- for (var x = 1; x < 16; x++)
  +model(class="model-"+x)
!

CSS 

              
                @import "compass/css3";
*, *:after, *:before{
  @include box-sizing(border-box);
}
$blue    : #4285F4;
$green   : #4BD865;
$warning :#FF980F;

body{
  text-align: center;
  background: #eee;
}
section{
 float: left;
  min-width: 150px;
  width: 33.33%;
  padding:25px 0;
  min-height: 100px;
}
/*=====================*/
.checkbox{
  position: relative;
  display: inline-block;
  
  &:after, &:before{
    font-family: FontAwesome;
    font-feature-settings: normal;
    font-kerning: auto;
    font-language-override: normal;
    font-stretch: normal;
    font-style: normal;
    font-synthesis: weight style;
    font-variant: normal;
    font-weight: normal;
    text-rendering: auto;
  }

  label{
    width: 90px;
    height: 42px;
    background: #ccc;
    position: relative;
    display: inline-block;
    @include border-radius(46px);
    @include transition(.4s);
    &:after{
      content: '';
      position: absolute;
      width: 50px;
      height: 50px;
      @include border-radius(100%);
      left: 0;
      top: -5px;
       z-index: 2;
      background: #fff;
      @include box-shadow(0 0 5px rgba(0,0,0,.2));
      @include transition(.4s);
    }
  }
  input{
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    opacity: 0;
   cursor:pointer;
    &: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{
      &:after{
        left: 40px;
      }
    }
        
  }  
}

.model-1{
  .checkbox{
     input:checked + label{
      background: $blue/1.2;
      &:after{
        background: $blue;
      }
    }
  }
}

.model-2{
  .checkbox{
    label{
      width: 75px;
        &:after{
          top: 0;
          width:42px;
          height: 42px;
        }   
    }
    input:checked + label{
      background: $green;
      &:after{
        left: 35px;
      }
    }
  }
}

.model-3{
  .checkbox{
    label{
      background: #fff;
      border:1px solid #eee;
      height: 38px;
        &:after{
          background: #bbb;
          top: 3px;
          left: 5px;
          width:30px;
          height: 30px;
        }   
    }
    input:checked + label{
      &:after{
        background: $green/1.2;
        left: 55px;
      }
    }
  }
}

.model-4{
  .checkbox{
    label{
      background: #bbb;
      height: 25px;
      width: 75px;
        &:after{
          background: #fff;
          top: -8px;
          width:38px;
          height: 38px;
        }
    }
    input:checked + label{
      background: #77C2BB;
      &:after{
        background: #009688;
        left: 40px;
      }
    }
  }
}
.model-5{
  .checkbox{
    label{
      background: #bbb;
      height: 15px;
      width: 85px;
        &:after{
          background: #fff;
          top: -12px;
          width:36px;
          height: 36px;
        }
    }
    input:hover + label:after{
      @include scale(1.4);
    }
    input:checked + label{
      background: $warning/1.4;
      &:after{
        background: $warning;
        left: 50px;
      }
    }
  }
}
.model-6{
  .checkbox{
    label{
      background: #bbb;
      height: 2px;
      width: 60px;
        &:after{
          background: #bbb;
          top: -16px;
          width:32px;
          height: 32px;
        }
    }
    input:checked + label{
      background: $blue/1.2;
      &:after{
        background:$blue;
        left: 40px;
      }
    }
  }
}

.model-7{
  .checkbox{
    label{
      background: none;
      border:5px solid #555;
      height: 42px;
        &:after{
          background: #555;
          @include box-shadow(none);
          top: 2px;
          left: 2px;
          width:28px;
          height: 28px;
        }   
    }
    input:checked + label{
      border-color:$green/1.5;
      &:after{
        background: $green/1.2;
        left: 50px;
      }
    }
  }
}
.model-8{
  .checkbox{
    label{
      background: #ddd;
      width: 95px;
      @include border-radius(10px);
        &:after{
          background: #fff;
          @include border-radius(10px);
          top: 0;
          width:60px;
          height: 42px;
        }   
    }
    input:checked + label{
      background:$warning;
      &:after{
        left: 35px;
      }
    }
  }
}
.model-9{
  .checkbox{
    label{
      background: #aaa;
      width: 90px;
      height: 32px;
      @include border-radius(20px);
        &:after{
          @include border-radius(20px);
          top: 0;
          width:50px;
          height: 32px;
        }   
    }
    input:checked + label{
      background:$green/2;
      &:after{
        background: $green/1.4;
        left: 40px;
      }
    }
  }
}
.model-10{
  .checkbox{
    &:after{
      content: '\f00d';
      color: #aaa;
     position: relative;
      right: 30px;
      bottom: 15px;
    }
    &:before{
      content: '\f00c';
       position: relative;
      left: 35px;
      bottom: 15px;
      color: #fff;
      z-index: 1;
    }
    label{
      width: 80px;
      background: #EAEAEA;
      @include box-shadow(0 0 1px 2px rgba(0,0,0,.15));
        &:after{
          top: 0;
          width:42px;
          height: 42px;
        }   
    }
    input:checked + label{
      background: $green;
      &:after{
        left: 40px;
      }
    }
  }
}

.model-11{
  .checkbox{
    &:after, &:before{
      content: 'OFF';
      position: absolute;
      right: 10px;
      top: 10px;
      font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
      font-size: 12px;
      color: #90201F;
    }
    &:before{
      content: 'ON';
      left: -40px;
      z-index: 1;
      color: $green/2;
    }
    label{
      background: #E3666C;
      height: 32px;
      @include border-radius(0);
       @include box-shadow(0 0 1px 2px rgba(0,0,0,.2));
        &:after{
          background-color: #ffffff; 
          @include filter-gradient(#ffffff, #ffffff, horizontal); 
          @include background-image(linear-gradient(left,  #fff 30%,#ddd 45%,#fff 50%,#ddd 55%,#fff 70%));
          @include border-radius(0);
          @include box-shadow(none !important);
          @include transition(.1s);
          top: 0;
          width:50px;
          height: 32px;
        }   
    }
    input:checked + label{
      background:$green;
      &:after{
        left: 40px;
      }
    }
  }
}


.model-12{
  .checkbox{
    background: #2B2B2D;
    height: 40px;
    width: 160px;
     @include border-radius(50px);
    &:after, &:before{
      content: 'ON';
      font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
      line-height: 40px;
      font-size: 12px;
    }
    &:before{
      content: 'OFF';
      z-index: 1;
    }
    label{
      background: #1E1E1E;
      height:10px;
      width: 70px;
      margin: 0 5px;
       @include box-shadow(0 0 2px 2px rgba(0,0,0,.3) inset) ;
        &:after{
          background-color: #3F4545;
          @include background-image(linear-gradient(top,  #666 0%,#3F4545 100%));
          top: -9px;
          width:27px;
          height: 27px;
        }
      &:before{
        content: '';
        position: absolute;
        width: 14px;
        height: 14px;
        @include border-radius(100%);
        @include transition(.4s);
        background:#151515;
        z-index: 3;
        left: 7px;
        top: -2px;
      }
    }
    input:checked + label{
      &:after{
        left: 45px;
      }
      &:before{
        background: #94DA00;
        @include box-shadow(0 0 5px #94DA00) ;
        left: 52px;
      }
    }
  }
}
.model-13{
  .checkbox{
    &:after{
      content: 'OFF';
      font-family: Arial;
      position: absolute;
      color: #666;
      top: 12px;
      right: 15px;
    }
    label{
      background: none;
      border:3px solid #777;
      height: 40px;
       @include border-radius(20px);
      
        &:after{
          content: 'ON';
          font-family: Arial;
          color: #fff;
          line-height: 28px;
          text-indent: 100px;
          background: #777;
          overflow: hidden;
          @include box-shadow(none);
          @include border-radius(14px);
          @include translateX(-50px);
           @include transition(all .4s .2s, width .2s linear, text-indent .4s linear);
          
          top: 3px;
          left: auto;
          right: 2px;
          width:28px;
          height: 28px;
           
        }   
    }
    input:checked + label{
      border-color:$green/1.5;
      &:after{
        background: $green/1.2;
        left: auto;
        @include translateX(0px);
        @include transition(all .4s, width .2s .4s linear, text-indent  .3s .4s linear);
        width: 80px;
        text-indent: 0;
      }
    }
  }
}

.model-14{
  .checkbox{
    &:after, &:before{
      content: 'OFF';
      position: absolute;
      right: 10px;
      top: 10px;
      font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
      font-size: 12px;
      color: #90201F;
    }
    &:before{
      content: 'ON';
      left: -40px;
      z-index: 1;
      color: $green/2;
    }
    label{
      background:#fff;
      height: 32px;
      @include border-radius(0);
       @include box-shadow(0 0 2px rgba(0,0,0,.2));
        &:after{
          background:  #90201F;
          @include border-radius(0);
          @include box-shadow(none !important);
          @include transition(.3s);
          top: 0;
          width:40px;
          height: 32px;
        }   
    }
    input:checked + label{
      &:after{
         background:$green;
        left: 50px;
      }
    }
  }
}
.model-15{
  .checkbox{
      width: 94px;
      height: 34px;
      border: 2px solid #ddd;
      background:$green/2;
      @include border-radius(6px);
      overflow: hidden;
    &:after, label:before{
      content: 'ON';
      position: absolute;
      left: 10px;
      top: 8px;
      font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
      font-size: 12px;
      color: #fff;
    }
    label:before{
      content: 'OFF';
      left:auto;
      top: 8px;
      right: 10px;
      z-index: 1;
    }
    label{
      background: #f00;
      width: 90px;
      height: 32px;
      @include border-radius(4px);
        &:after{
          @include border-radius(4px);
          @include box-shadow(none !important);
          top: 0;
          width:50px;
          height: 32px;
        }   
    }
    input:checked + label{
      @include translateX(40px);
      &:after{
        left:0;
      }
    }
  }
}
!

JS
!
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