body{
  margin:0;
  background:#f7f7f5;
  color:#1c1c1c;
  font-family:Arial,Helvetica,sans-serif;
  line-height:1.65;
}
main{
  width:min(900px,calc(100% - 32px));
  margin:40px auto;
  padding:32px;
  background:#fff;
  border-radius:12px;
  box-shadow:0 8px 30px rgba(0,0,0,.07);
}
h1{margin-top:0}
h2{margin-top:30px;font-size:1.25rem}
a{color:#006da4}
.note{padding:14px 16px;background:#fff4cf;border-left:4px solid #d8b247;border-radius:6px}
footer{margin-top:34px;font-size:.9rem;color:#666}
@media(max-width:600px){main{margin:16px auto;padding:20px}}