body {
    font-family: Arial, sans-serif;
    margin: 20px;
}
.container {
    max-width: 400px;
    margin: auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
}
form {
    display: flex;
    flex-direction: column;
}
label {
    margin-top: 10px;
}
input, button {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
}
table {
    width: 100%;
    margin-top: 20px;
    border-collapse: collapse;
}
th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}