[CSS] Jak utworzyć animowany przycisk typu toggle button za pomocą CSS?

<label class="btn-toggle">
    <input class="btn-toggle__checkbox" type="checkbox"/>
    <span class="btn-toggle__body">
        <span class="btn-toggle__body__switch"></span>
        <span class="btn-toggle__body__track">
            <span class="btn-toggle__body__track__option--view">View</span>
            <span class="btn-toggle__body__track__option--edit">Edit</span>
        </span>
    </span>
</label>

.btn-toggle {
    position: relative;
    z-index: 1;
    display: inline-block;
    height: 30px;
    cursor: pointer;
}
 
.btn-toggle__checkbox {
    position: absolute;
    /*
        umieszczamy nasz checkbox poza zasiegiem kursora,
        tj. pod tekstem i tłem suwaka. Dzięki temu użytkownik
        nie będzie go widział, ale dalej będzie w stanie go kliknąć.
     */
    opacity: 0;
    z-index: -1;
    visibility: hidden;
}
 
.btn-toggle__body {
    width: 100px;
    height: 30px;
    background: #fff;
    border: 1px solid #dadde1;
    display: inline-block;
    position: relative;
    z-index: 1;
    border-radius: 50px;
}
 
.btn-toggle__body__switch {
    width: 30px;
    height: 30px;
    display: inline-block;
    position: absolute;
    z-index: 2;
    left: 0;
    top: 50%;
    border-radius: 50%;
    border: 1px solid #fff;
    box-shadow: 0 2px 2px rgba(0, 0, 0, 0.13);
    color: #fff;
    background: #439fd8;
    transition:
        transform cubic-bezier(0.34, 1.61, 0.7, 1) .25s,
        background cubic-bezier(0.34, 1.61, 0.7, 1) .25s;
    transform: translate3d(-1px, -50%, 0);
}
 
.btn-toggle__body__switch:before {
    content: '«';
    display: block;
    line-height: 30px;
    font-size: 20px;
    text-align: center;
}
 
.btn-toggle__body__track {
    position: absolute;
    z-index: 1;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    border-radius: 50px;
}
 
[class*="btn-toggle__body__track__option"] {
    position: absolute;
    z-index: 1;
    top: 0;
    bottom: 0;
    width: 100px;
    text-align: center;
    line-height: 30px;
    transition:
        transform cubic-bezier(0.34, 1.61, 0.7, 1) .25s,
        background cubic-bezier(0.34, 1.61, 0.7, 1) .25s;
}
 
.btn-toggle__body__track__option--view {
    transform: translate3d(10%, 0, 0);
    background: #fff;
    color: #439fd8;
}
 
.btn-toggle__body__track__option--edit {
    transform: translate3d(-100%, 0, 0);
    background: #439fd8;
    color: #fff;
}
 
.btn-toggle:hover .btn-toggle__body__switch {
    border-color: #b5bbc3;
    transform: scale(1.06) translate3d(-1px, -47%, 0);
}
 
.btn-toggle:active .btn-toggle__body__switch {
    transform: scale(0.94) translate3d(-1px, -53%, 0);
}
 
/*
  gdy checkbox nie jest zaznaczony, ustawiamy mu style które pokażą informację o tym,
  że zmiana stanu przycisku zaznaczy checkbox
*/
.btn-toggle__checkbox:not(:checked) ~ .btn-toggle__body > .btn-toggle__body__switch {
    transform: translate3d(70px, -50%, 0);
    background: #fff;
    color: #439fd8;
    border: 1px solid #ccd0d6;
}
 
.btn-toggle__checkbox:not(:checked) ~ .btn-toggle__body > .btn-toggle__body__switch:before {
    content: '»';
}
 
.btn-toggle:hover .btn-toggle__checkbox:not(:checked) ~ .btn-toggle__body > .btn-toggle__body__switch {
    transform: scale(1.06) translate3d(66px, -47%, 0);
}
 
.btn-toggle:active .btn-toggle__checkbox:not(:checked) ~ .btn-toggle__body > .btn-toggle__body__switch {
    transform: scale(0.94) translate3d(74px, -53%, 0);
}
 
.btn-toggle__checkbox:not(:checked) ~ .btn-toggle__body .btn-toggle__body__track__option--view {
    transform: translate3d(110%, 0, 0);
}
 
.btn-toggle__checkbox:not(:checked) ~ .btn-toggle__body .btn-toggle__body__track__option--edit {
    transform: translate3d(-10%, 0, 0);
}