body {
    font-family: Arial, sans-serif;
    text-align: center;
}

h1 {
    margin-bottom: 10px;
}

table {
    border-collapse: collapse;
    margin: 0 auto;
}

th, td {
    border: 1px solid #ccc;
    padding: 5px;
    cursor: pointer;
    text-align: center;
    font-size: 16px;
    background-color: #f2f2f2;
}

th {
    background-color: #ddd;
}

td:hover {
    background-color: #e0e0e0;
}

td:active {
    background-color: #ccc;
}

select {
    font-size: 16px;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
    cursor: pointer;
}


.bg-0{
    background-color: grey;
}
.bg-1{
    background-color: white;
}
.bg-2{
    background-color: green;
}
.bg-3{
    background-color: blue;
}