body {
    
    max-width: 600px; 
    margin: 0 auto; 
    padding: 20px; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

article {
    margin-bottom: 40px; 
    text-align: justify;  
}

header {
    text-align: center;   
    margin-bottom: 50px;  
}

nav ul {
    list-style: none;     
    padding: 0;
    display: flex;        
    justify-content: center;
    gap: 20px;
}