body {
    align-items: center;
    display: flex;
    height: 100vh;
    justify-content: center;
    margin: 0;
}

table.scrabble {
    border-collapse: collapse;
    font-family: sans-serif;
    text-transform: uppercase;
}

table.scrabble td, table.scrabble th {
    height: 3rem;
    text-align: center;
    vertical-align: middle;
    width: 3rem;
}

table.scrabble th {
    font-weight: normal;
}

table.scrabble td {
    background-color: green;
    border: 2px solid #333;
    font-size: 60%;
}

/* Triple word score (tws): */

table.scrabble td.tws {
    background-color: red;
}

table.scrabble td.tws::before {
    content: "Triple word";
}

/* Double word score (dws): */

table.scrabble td.dws {
    background-color: pink;
}

table.scrabble td.dws::before {
    content: "Double word";
}

table.scrabble td.dws.center::before {
    content: "\2605";
    font-size: 300%;
}

/* Triple letter score (tls): */

table.scrabble td.tls {
    background-color: blue;
}

table.scrabble td.tls::before {
    content: "Triple letter";
}

/* Double letter score (dls): */

table.scrabble td.dls {
    background-color: lightblue;
}

table.scrabble td.dls::before {
    content: "Double letter";
}