body {
    font-family: 'Arial', sans-serif;
    margin: 20px; /* Add margin to the body */
    padding: 0;
    text-align: justify;
}

.header {
    background-color: #3498db;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-bottom: 20px; /* Add margin below the header */
}

.menu {
    background-color: #f8f9fa;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.main-content {
    padding: 20px;
}

.footer {
    background-color: #3498db;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-bottom: 20px; /* Add margin below the header */
}