body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
}

.sidebar {
    width: 200px;
    background-color: #333;
    color: white;
    padding: 15px;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
}

.sidebar ul li {
    margin: 15px 0;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
}

.main-content {
    flex: 1;
    padding: 20px;
}
.main-content {
    max-width: 900px;
    margin: 50px auto;
    padding: 20px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.main-content h1 {
    text-align: center;
    margin-bottom: 20px;
}

.main-content form {
    display: flex;
    flex-direction: column;
}

.main-content label {
    margin-bottom: 5px;
    font-weight: bold;
}

.main-content input {
    margin-bottom: 15px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.main-content button {
    padding: 10px;
    background-color: #333;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

.main-content button:hover {
    background-color: #555;
}

.main-content p {
    text-align: center;
    margin-top: 15px;
}

.main-content a {
    color: #333;
    text-decoration: none;
}

.main-content a:hover {
    text-decoration: underline;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

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

th, td {
    padding: 8px;
    text-align: center;
}

th {
    background-color: #f2f2f2;
    font-weight: bold;
}

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

tr:hover {
    background-color: #f1f1f1;
}