body { 

    font-family: Arial, sans-serif; 

    margin: 0; 

    padding: 0; 

    line-height: 1.6; 

} 

  

header, footer { 

    background-color: #333; 

    color: white; 

    padding: 20px; 

    text-align: center; 

} 

  

main { 

    padding: 20px; 

} 

  

section { 

    margin-bottom: 40px; 

} 

  

h2 { 

    border-bottom: 2px solid #ccc; 

    padding-bottom: 5px; 

}