Overlapping Toggle

by joplomacedo

HTML

<div class="toggleBlock is-active">
    <div class="toggleSide toggleSideInactive">
        Inactive
    </div>
    <div class="toggleSide toggleSideActive">
        Active  
    </div>
    <div class="toggleSlider"></div>
</div>

CSS

* {
    box-sizing: border-box;
    font-family: helveticaneue-light;
        
}

body {
    width: 200px;
    margin: 20px auto;
}

.toggleBlock {
    overflow: hidden;
    position: relative;
    border: 1px solid black;
    font-size: 0.8em;
    text-transform: uppercase;
}

.toggleSide,
.toggleSlider {
    padding-top: 5px;
    padding-bottom: 6px;
}

.toggleSide {
    padding-right: 7px;
    padding-left: 7px;
}

.toggleSideActive {
    float: left;
    background: #eee;
    -webkit-transition: 0.15s;
}

.toggleBlock.is-active .toggleSideActive {
    width: 100%;
}

.toggleBlock.is-inactive .toggleSideActive,
.toggleSlider {
    width: 30%;
}

.toggleSlider {
    float: left;
    margin-left: -30%; /* same as width above */
    background: #fff;
    box-shadow: 1px 0 black, -1px 0 black;
}

.toggleSlider:after {
    /* for natural height*/
    content: "C";
    color: transparent;
}

.toggleSideInactive {
    position: absolute;
    z-index: -1;
    top: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    background: indianred;
    text-align: right;
}

JavaScript

$('.toggleBlock').on('click', function () {
    $(this).toggleClass('is-active is-inactive');
});