:root {
    --rotation-speed: 500ms;
    --background-color: #222;
}

html,
body {
    height: 100%;
    overflow-x: hidden;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--background-color);
    font-family: Arial, Helvetica, sans-serif;
}

.container {
    height: 350px;
    width: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.items {
    position: relative;
    height: 75px;
    width: 220px;
}

[type='radio'] {
    display: none;
}

label {
    height: 75px;
    width: 220px;
    background-color: gainsboro;
    border: 1px solid black;
    position: absolute;
    animation: changeOrder calc(var(--rotation-speed) * 6) linear infinite;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
}

label:nth-of-type(1) {
    animation-delay: -0;
}

label:nth-of-type(2) {
    animation-delay: calc(var(--rotation-speed) * -1);
}

label:nth-of-type(3) {
    animation-delay: calc(var(--rotation-speed) * -2);
}

label:nth-of-type(4) {
    animation-delay: calc(var(--rotation-speed) * -3);
}

label:nth-of-type(5) {
    animation-delay: calc(var(--rotation-speed) * -4);
}

label:nth-of-type(6) {
    animation-delay: calc(var(--rotation-speed) * -5);
}

[type='radio']:checked:nth-of-type(1) ~ .selection {
    background-color: darkblue;
}

[type='radio']:checked:nth-of-type(2) ~ .selection {
    background-color: deeppink;
}

[type='radio']:checked:nth-of-type(3) ~ .selection {
    background-color: darkcyan;
}

[type='radio']:checked:nth-of-type(4) ~ .selection {
    background-color: darkorchid;
}

[type='radio']:checked:nth-of-type(5) ~ .selection {
    background-color: darkred;
}

[type='radio']:checked:nth-of-type(6) ~ .selection {
    background-color: goldenrod;
}

.selection {
    height: 150px;
    width: 150px;
    border: 1px solid white;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
}

@keyframes changeOrder {
    from {
        z-index: 6;
    }
    to {
        z-index: 1;
    }
}

label:active {
    margin-left: 400%;
    position: static;
}

label:active::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    z-index: 10;
}