body { font-family: Arial, sans-serif; margin: 0; padding: 0; }
header { background-color: #f8f9fa; padding: 20px; text-align: center; }
section { padding: 20px; }
footer { background-color: #f8f9fa; padding: 10px; text-align: center; }
ul { list-style-type: none; }
li { margin-bottom: 10px; }