.smiley {
    width: 500px;
    height: 500px;
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(9, 1fr);
}

.outline {
    background-color: black;
}

.blue {
    background-color: aqua;
}

.yellow {
    background-color: yellow;
}