.button {
    background-color: slategrey;
    color: white;
    padding: 5px;
    margin: 5px;
    min-width: 20px;
    border-radius: 20px;
}

.button:hover {
    cursor: pointer;
}

td {
    padding: 10px;
    min-width: 20px;
}

select {
    padding: 5px;
    margin: 5px;
}