body{
    background: black;
}

canvas{
    display: block;
    margin: 40px auto;
}

.dessin{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 10px;
    grid-auto-rows: minmax(100px, auto);
}

#heart{
    grid-row: 0;
    column-gap: 0;
}

#pen{
    grid-row: 0;
    column-gap: 1;
}