1body { 2 background-color: #e0e0eb; 3} 4 5div.header { 6 margin-left: auto; 7 margin-right: auto; 8 max-width: 60em; 9 padding-left: 2em; 10 padding-right: 2em; 11} 12 13div.contents { 14 margin-left: auto; 15 margin-right: auto; 16 max-width: 60em; 17 background-color: white; 18 padding: 2em; 19 border-radius: 1em; 20} 21