.centered {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.hstack {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
}

.vstack {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
}

.zstack {
    display: grid;
    grid-template-rows: 1fr;
    grid-template-columns: 1fr;
    grid-template-areas: "stack";
}

.zstack > * {
    grid-area: stack;
}

.nowrap {
    flex-wrap: nowrap;
}