body{background:#f7f7f7;margin:0;font-family:Arial,sans-serif}header{color:#fff;background:#222;padding:1rem}nav a{color:#fff;margin-right:1rem;text-decoration:none}main{padding:2rem}textarea,input{width:100%;margin-top:.5rem;padding:.5rem;font-size:1rem}button{margin-top:1rem;padding:.6rem 1rem;font-size:1rem}