html {
  font-size: 16px;
}

body {
  padding-top: 5rem;
  font-family: "Hiragino Kaku Gothic ProN", "メイリオ",sans-serif;
}

img {
  width: 100%;
}

footer {
  margin-top: 30px;
  padding: 30px;
  text-align: center;
  color: #000;
  background-color: #e9ecef;
}