.crucigramacasilla {
    width: 1.5vw;
    height: 1.52vw;
    text-align: center;
    border: 0;
    font-size: x-small;
}

.crucigramacasillaborde {
    width: 2vw;
    height: 2vw;
    text-align: center;
    border: 1px solid;
}

td{
    border-style: none !important;
}