.case {
    position: relative;
    width: 58px;
    height: 58px;
    border: 2px solid black;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
}

.case:not(:last-child) {
    border-right: none;
}

.case > .circle {
    width: 3em;
    height: 3em;
}

.case.inactive {
    border: 0px;
    box-shadow: 0px 0px 3px 0px #000;
    background-color: #888888;
}

.case.inactive.lightgreen {
    background-color: var(--color-lightgreen);
}

.case.inactive.lightred {
    background-color: var(--color-lightred);
}

@media (max-width: 720px) {
    .case {
        height: calc(58px * 0.8);
        width: calc(58px * 0.8);
    }
}