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HTML

            
              <link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
<div class="container">
    <h2>
        Check it out!
    </h2>
    <input type="checkbox" id="cbtest" />
    <label for="cbtest" class="check-box"></label> 
    <p>
        Only an input and a label, and no javascript needed!
        <br />
        Or without an input, just add the class "checked" to start the animation.
        <br>
        Tested with: IE9+, Chrome, FF
    </p>
</div>
            
          
!

CSS

            
              /* Made by Jimmy Gillam */
$checked-color: #34b93d;
$unchecked-color: #000;
$checkbox-height: 100px;
$background-color:#667788;
$font-color:#efefef;
$duration: .4s;
  
 
html, body{
    padding:0;
    margin:0;
    background-color:$background-color;
    color:$font-color;
    font-family:'Open Sans';
}
  
.container{
    box-sizing: border-box;
    padding:25px;
    text-align:center; 
    
    h2{
        margin-bottom:40px;
    }
    
    p{
        margin-top:40px;   
    }
}

/* Checkmark style starts */

@-moz-keyframes dothabottomcheck{
    0% { height: 0; }
    100% { height: $checkbox-height/2; }
}

@-webkit-keyframes dothabottomcheck{
    0% { height: 0; }
    100% { height: $checkbox-height/2; }
}

@keyframes dothabottomcheck{
    0% { height: 0; }
    100% { height: $checkbox-height/2;  }
}

@keyframes dothatopcheck{
    0% { height: 0; }
    50% { height: 0; }
    100% { height: $checkbox-height * 1.2; }
}
@-webkit-keyframes dothatopcheck{
    0% { height: 0; }
    50% { height: 0; }
    100% { height: $checkbox-height * 1.2; }
}
@-moz-keyframes dothatopcheck{
    0% { height: 0; }
    50% { height: 0; }
    100% { height: $checkbox-height * 1.2; }
}

input[type=checkbox]{
    display:none;
}

.check-box {
    height: $checkbox-height;
    width: $checkbox-height;
    background-color: transparent;
    border: $checkbox-height * .1 solid $unchecked-color;
    border-radius: 5px;
    position: relative;
    display: inline-block;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    -moz-transition: border-color ease $duration/2;
    -o-transition: border-color ease $duration/2;
    -webkit-transition: border-color ease $duration/2;
    transition: border-color ease $duration/2;
    cursor:pointer;

    &::before, &::after {
        -moz-box-sizing: border-box;
        -webkit-box-sizing: border-box;
        box-sizing: border-box;
        position: absolute;
        height: 0;
        width: $checkbox-height * .2;
        background-color: $checked-color;
        display: inline-block;
        -moz-transform-origin: left top;
        -ms-transform-origin: left top;
        -o-transform-origin: left top;
        -webkit-transform-origin: left top;
        transform-origin: left top;
        border-radius: 5px;
        content: ' ';
        -webkit-transition: opacity ease .5;
        -moz-transition: opacity ease .5;
        transition: opacity ease .5;
    }

    &::before {
        top:$checkbox-height * .72;
        left: $checkbox-height * .41;
        box-shadow: 0 0 0 $checkbox-height * .05 $background-color;
        -moz-transform: rotate(-135deg);
        -ms-transform: rotate(-135deg);
        -o-transform: rotate(-135deg);
        -webkit-transform: rotate(-135deg);
        transform: rotate(-135deg);
    }

    &::after {
        top: $checkbox-height * .37;
        left: $checkbox-height * .05;
        -moz-transform: rotate(-45deg);
        -ms-transform: rotate(-45deg);
        -o-transform: rotate(-45deg);
        -webkit-transform: rotate(-45deg);
        transform: rotate(-45deg);
    }
}

input[type=checkbox]:checked + .check-box,
.check-box.checked{
    border-color:$checked-color;
    
    &::after{
        height: $checkbox-height * .5;
        -moz-animation: dothabottomcheck $duration/2 ease 0s forwards;
        -o-animation: dothabottomcheck $duration/2 ease 0s forwards;
        -webkit-animation: dothabottomcheck $duration/2 ease 0s forwards;
        animation: dothabottomcheck $duration/2 ease 0s forwards;
    }
     
    &::before{
        height: $checkbox-height * 1.2;
        -moz-animation: dothatopcheck $duration ease 0s forwards;
        -o-animation: dothatopcheck $duration ease 0s forwards;
        -webkit-animation: dothatopcheck $duration ease 0s forwards;
        animation: dothatopcheck $duration ease 0s forwards;
    }
}
            
          
!

JS

            
              
            
          
!
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