html {
  font-size: 16px;
}

body {
  margin: 0;
  color: #111;
  background: #f7f7f7;
  line-height: 1.7;
  font-family: "Yu Gothic UI", "Yu Gothic", "Meiryo", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}