JSFiddle - React, Tailwind, and code Playground

HTML

<div class="demo demo-1">
    <input type="checkbox" id="checkbox" class="checkbox"/>
    <div class="checkbox-wrapper">
        <label for="checkbox" class="checkbox-label"></label>
    </div>
</div>

<div class="demo demo-2">
    <input type="checkbox" id="checkbox-2" class="checkbox"/>
    <div class="checkbox-wrapper">
        <label for="checkbox-2" class="checkbox-label"></label>
    </div>
</div>

CSS

.demo {
    margin: 15px;
}

/* Metro UI Style */

.demo-1 .checkbox-wrapper {
    width: 80px;
    height: 32px;
    position: relative;
    display: inline-block;
    overflow: hidden;
}
.demo-1 .checkbox {
    display: none;
}
.demo-1 .checkbox-label:before,
.demo-1 .checkbox-label:after {
    font-family: sans-serif;
    font-size: 13px;
    color: #ffffff;
    position: absolute;
    font-weight: bold;
    line-height: 32px;
    height: 32px;
    width: 40px;
    text-align: center;
}
.demo-1 .checkbox-label:before {
    content: 'ON';
    left: -40px;
    background: #45b6af;
}
.demo-1 .checkbox-label:after {
    content: 'OFF';
    right: -40px;
    background: #f3565d;
}
.demo-1 .checkbox-label {
    display: block;
    position: absolute;
    left: 0;
    width: 40px;
    height: 32px;
    transition: all .4s ease;
    cursor: pointer;
    background: #dddddd;
}
.demo-1 .checkbox:checked + .checkbox-wrapper .checkbox-label {
    left: 40px;
}

/* iOS 7 Style */

.demo-2 .checkbox-wrapper {
    width: 58px;
    height: 32px;
    position: relative;
    display: inline-block;
    background: #ffffff;
    border-radius: 16px;
    transition: all .3s ease-out;
    box-shadow: 0px 0px 0px 2px #ddd;
}
.demo-2 .checkbox {
    display: none;
}
.demo-2 .checkbox-label {
    display: block;
    position: absolute;
    left: 0px;
    top: 0px;
    width: 32px;
    height: 32px;
    cursor: pointer;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0px 2px 3px rgba(0,0,0,0.2);
    transition: all .3s ease-out;
}
.demo-2 .checkbox:checked + .checkbox-wrapper {
    background: #0bd318;
    box-shadow: 0px 0px 0px 2px #0bd318;
}
.demo-2 .checkbox:checked + .checkbox-wrapper .checkbox-label {
    left: 26px;
}