body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

h1 {
    text-align: center;
    color: #333;
}

form {
    display: flex;
    flex-direction: column;
}

input[type="text"], input[type="number"], textarea {
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

input[type="submit"] {
    background-color: #28a745;
    color: #fff;
    border: none;
    padding: 10px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s;
}

input[type="submit"]:hover {
    background-color: #218838;
}

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

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

th, td {
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f4f4f4;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}