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

.container {
    width: 80%;
    margin: auto;
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 10px;
    text-align: center;
}

button {
    padding: 8px 12px;
    cursor: pointer;
}

button:hover {
    opacity: 0.8;
}

button:focus {
    outline: none;
}