:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f5f6f7;
  color: #1f2329;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
}

main {
  width: min(420px, calc(100% - 48px));
  text-align: center;
}

.mark {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #07c160;
  color: #fff;
  font-size: 30px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: 26px;
  letter-spacing: 0;
}

p {
  margin: 14px 0 0;
  color: #60646c;
  font-size: 15px;
  line-height: 1.7;
}