html {
  width: 100%;
}
body {
  width: 100%;
  font-size: 14px;
  color: #222;
  font-family: 'M PLUS Rounded 1c', sans-serif;
}

header {
  width: 100%;
  min-width: 950px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  box-shadow: 0 2px 2px #CCC;
  z-index: 10;
}
header h1 {
  width: 280px;
  margin: 15.5px 25px 14.5px 25px;
}
header h1 img {
  width: 100%;
}
header h1:hover {
  opacity: .7;
}
header nav {
  width: 650px;
  text-align: right;
}
header nav .menu {
  display: inline-block;
  font-family: 'Noto Sans JP', sans-serif;
}
header nav .menu.en {
  font-family: Calibri, sans-serif;
}
header nav .menu a {
  display: inline-block;
  color: #222;
  font-size: 16px;
  text-decoration: none;
  line-height: 70px;
  padding: 0 1em;
}
header nav .menu a:hover {
  color: white;
  background-color: hsl(201, 76%, 46%);
}
header nav .lang {
  display: inline-block;
  text-align: center;
  line-height: 50px;
  text-decoration: none;
  color: white;
  margin: 0 20px;
  padding-left: 2em;
  border-left: 1px solid #CCC;
  font-family: 'M PLUS Rounded 1c', sans-serif;
}
header nav .lang b {
  color: #333;
  font-size: 16px;
  background-color: #DDD;
  font-weight: normal;
  padding: 0 .5em;
}
header nav .lang span {
  color: #333;
  font-size: 16px;
}
header nav .lang a {
  color: #222;
  font-size: 16px;
  text-decoration: none;
  padding: 0 .5em;
}
header nav .lang a:hover {
  color: white;
  background-color: #AAA;
}

main {
  width: 100%;
  margin: 0;
}
main h1 {
  font-size: 44px;
  color: #666;
  text-align: center;
  font-family:
    "Helvetica Neue",
    Arial,
    "Hiragino Kaku Gothic ProN",
    "Hiragino Sans",
    Meiryo,
    sans-serif;
  margin: 100px 0 10px 0;
}
main h1 + div {
  color: #666;
  text-align: center;
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 40px;
  font-family:
    "Helvetica Neue",
    Arial,
    "Hiragino Kaku Gothic ProN",
    "Hiragino Sans",
    Meiryo,
    sans-serif;
}
main h2 {
  width: 950px;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid #CCC;
  margin: 0 auto 50px auto;
  font-size: 18px;
  position: relative;
}
main h2 span {
  display: inline-block;
  padding-bottom: 10px;
  padding-left: 15px;
  padding-right: 15px;
  text-align: center;
  border-bottom: 4px solid hsl(201, 76%, 46%);
}

section {
  width: 760px;
  margin: 0 auto 50px auto;
}

p {
  line-height: 2em;
  font-size: 16px;
  margin: .5em auto;
  text-align: justify;
  text-justify: distribute;
}

footer {
  width: 100%;
}
#footer-nav {
  padding: 15px;
  text-align: center;
  font-size: 0;
  background-color: hsl(201, 76%, 98%);
}
#footer-nav a {
  display: inline-block;
  padding: 5px 10px;
  border-right: 1px solid #AAA;
  text-decoration: none;
  color: #666;
  font-size: 14px;
  transition: all .4s;
}
#footer-nav a:first-child {
  border-left: 1px solid #AAA;
}
#footer-nav a:hover {
  background-color: hsl(201, 76%, 96%);
}
#footer-bottom {
  background-color: hsl(201, 76%, 46%);
  padding: 10px;
}
footer small {
  display: block;
  color: white;
  text-align: right;
  font-family: 'Gelasio', serif;
}