body {
    font-family: Arial, sans-serif;
    background-color: #e3f2fd;
    margin: 0;
    padding: 20px;
}
.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
h1 {
    text-align: center;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table, th, td {
    border: 1px solid #ddd;
}
th, td {
    padding: 8px;
    text-align: center;
}
.buttons button {
    margin: 5px;
}