perro

.rojo{
    width: 100px;
    height:  100px;
    border: 1px solid red;
}


.verde{
    width: 100px;
    height:  100px;
    border: 1px solid green;
}

.mapa{
    display: grid;
    grid-template-columns: repeat(21,1fr);
    grid-template-rows: repeat(19,1fr);
}