*{margin:0; padding:0;}

.quadrado {
    width: 80px;
    height: 80px;
    border: 1px solid black;
    font-size: 20px;
    /* font-weight: bold; */
    font-family:Arial, Helvetica, sans-serif;
    display:flex;
    align-items: center;
    justify-content: center;
}
#tabuleiro {
    width: 653px; /*81.6*8 = 652.8*/
    height: 653px;
    background-color: white;
    display:flex;
    align-items:center;
    justify-content:center;
    flex-wrap: wrap;
}
.container{
    width: 700px;
    padding-top: 20px;
    /* height: 700px; */
    background-color: white;
    display:flex;
    /* align-items:center; */
    justify-content:center;
    flex-wrap: wrap;
    margin:auto;
}