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

.login-container, .register-container, .dashboard-container {
    width: 100%;
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.menu {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.menu a {
    padding: 10px;
    background: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
}

.menu a:hover {
    background: #0056b3;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

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

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

th {
    background-color: #f4f4f4;
}

.error {
    color: red;
    margin-bottom: 10px;
}

.success {
    color: green;
    margin-bottom: 10px;
}