body {
  margin: 0 !important;
}

body * {
  /* font-family: "メイリオ", Meiryo, "ＭＳ Ｐゴシック", "Hiragino Kaku Gothic Pro",
    "ヒラギノ角ゴ Pro W3", "Hiragino Sans", "ヒラギノ角ゴ W3", system-ui,
    sans-serif !important; */
  font-family: "Noto Sans JP", "Noto Sans CJK JP", "Noto Sans Japanese";
  font-size: 18px;
  line-height: 2em;
  /* min-width: 729px; */
}

@media only screen and (max-device-width: 730px) {
  body * {
    font-size: 16px;
  }
}

/*** ヘッダー ***/
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 10px 50px 0;
}
header .logo {
  width: 320px;
}

header div.nav {
  display: inline-block;
  width: 300px;
}
header div.nav a {
  text-decoration: none;
  color: #1998ce;
  font-weight: bold;
  margin: 0 5px;
}

header div.nav a:hover {
  color: #fa8d00;
  text-decoration: underline;
}

/* フッター */
footer {
  background-color: #50c8fa;
  color: #fff;
  text-align: center;
  margin: 100px auto 0;
  padding: 30px 0;
}

@media only screen and (max-device-width: 730px) {
  header {
    margin: 10px 0 0;
    display: block;
    text-align: center;
  }
  header .logo {
    width: 210px;
  }
  footer {
    font-size: 16px;
  }
}