body{font-family:Arial;margin:0}header{background:#0b5d57;color:#fff;padding:20px}nav a{color:#fff;margin:8px;text-decoration:none}.hero{background:#0b5d57;color:#fff;padding:60px;text-align:center}.c{padding:30px;max-width:1000px;margin:auto}footer{background:#222;color:#fff;padding:20px;text-align:center}