.button {
 user-select: none;
}

.app {
 padding: 10px;
}

.item.exiting,
.item.exited {
 display: none;
}

.container { 
 display: flex;
 flex-direction: column;
 flex-wrap: wrap;
 list-style: none;
 margin: 0;
 padding: 0;
 gap: 0.5rem;
}

button {
 margin: 1rem 0.5rem;
}

.item {
 padding: 0.5rem 1rem;
 border: solid 2px var(--color-surface-white);
 border-radius: 10px; 
 background-color: var(--color-just-black)
}