body{font-family:Arial;margin:0;background-image:url('https://www.transparenttextures.com/patterns/ice-cream.png');}
.header{background:#2c6f4f;color:white;text-align:center;padding:30px;}
.nav{background:#1f4e38;padding:12px;text-align:center;}
.nav a{color:white;margin:10px;text-decoration:none;font-weight:bold;}
.section{background:white;max-width:1100px;margin:30px auto;padding:30px;border-radius:12px;box-shadow:0 5px 15px rgba(0,0,0,.2);}