.toggle {
    position: relative;
    display: block;
    width: 40px;
    height: 20px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transform: translate3d(0, 0, 0);
}

    .toggle:before {
        content: "";
        position: relative;
        top: 3px;
        left: 3px;
        width: 34px;
        height: 14px;
        display: block;
        background: #9A9999;
        border-radius: 8px;
        transition: background 0.2s ease;
    }

    .toggle span {
        position: absolute;
        top: 0;
        left: 0;
        width: 20px;
        height: 20px;
        display: block;
        background: white;
        border-radius: 10px;
        box-shadow: 0 3px 8px rgba(154, 153, 153, 0.5);
        transition: all 0.2s ease;
    }

        .toggle span:before {
            content: "";
            position: absolute;
            display: block;
            margin: -18px;
            width: 56px;
            height: 56px;
            background: rgba(79, 46, 220, 0.5);
            border-radius: 50%;
            transform: scale(0);
            opacity: 1;
            pointer-events: none;
        }

#cbx:checked + .toggle:before {
    background: #F4FCB7;
}

#cbx:checked + .toggle span {
    background: #bfd22b;
    transform: translateX(20px);
    transition: all 0.2s cubic-bezier(0.8, 0.4, 0.3, 1.25), background 0.15s ease;
    box-shadow: 0 3px 8px rgba(79, 46, 220, 0.2);
}

#cbx:checked + .toggle span:before {
    transform: scale(1);
    opacity: 0;
    transition: all 0.4s ease;
}

.center {
    position: absolute;
    top: calc(50% - 10px);
    left: calc(50% - 20px);
}