*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:#fff7ed;color:#292524}
main{max-width:720px;margin:55px auto;background:#fff;padding:38px;border-top:7px solid #f59e0b;box-shadow:0 12px 28px #0002}
h1{text-align:center;margin:0 0 25px;font-size:28px}
.notice{padding:24px;background:#fffbeb;border:1px solid #fcd34d;border-radius:8px}
.notice h2{margin-top:0}
.notice p{margin-bottom:0;line-height:1.6}
nav{margin-top:28px;text-align:center}
nav a{color:#b45309}