.grid {
    display: grid;
    grid-gap: .25em 1em;
}
.grid-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.grid > * {
    background: #f7f7f7;
    border: 1px solid #ccc;
    border-radius: 1em;
    padding: 0 1em 1em;
}