estilos.css

body {
    background: teal;
    font-size: 20px;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

table,
th,
td {
    border: 1px solid black;
    border-collapse: collapse;
    align-content: center;
}

table {
    width: 100%;
}

p {
    text-align: left;
}

input {
    vertical-align: middle;
}

td {
    height: 200px;
    width: 30%;
    text-align: center;
    font-size: 30px;
    font-family: Arial, Helvetica, sans-serif;
}

button {
    visibility: unset;
}

.hidden {
    display: none;
    /* visibility: hidden; */
}