* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
} 

body {
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center; 
    min-height: 100vh; 
    background-color: #333; 
    font-family: Arial, sans-serif;
    color: white;
    padding: 20px;
}