header,
nav,
section,
footer {
  display: block;
}

body {
  font-family: "Open Sans Condensed", sans-serif;
  background-color: black;
  color: white;
  font-size: 20px;
}

header img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

h1,
h2,
h3 {
  font-family: "Hina Mincho", serif;
  margin-top: 1%;
  margin-bottom: 1%;
}

#wrap {
  width: 80%;
  margin: 0 auto;
  background-color: #222;
  overflow: auto;
}

header h1 {
  font-size: 72px;
  margin-left: 1%;
}

nav ul {
  padding: 1%;
  list-style: none;
}

nav li {
  display: inline;
  padding-right: 1%;
}

nav a {
  text-decoration: none;
  font-size: 22px;
  color: #777;
  transition-property: color;
  transition-duration: 2s;
}

nav a:hover {
  color: #adbce6;
}

section {
  float: left;
  width: 70%;
  margin-left: 1%;
}

section h2 {
  font-size: 30px;
}

section h3 {
  font-size: 22px;
}

section img {
  width: 50%;
}

section iframe {
  width: 50%;
  margin-bottom: 1%;
}

section ul {
  list-style: none;
}

section a {
  text-decoration: none;
  color: white;
  transition-property: color;
  transition-duration: 1s;
}

section a:hover {
  color: #adbce6;
}

footer {
  clear: both;
  margin-left: 1%;
  padding-top: 5%;
  font-size: 12px;
  color: #777;
}

footer a {
  color: #777;
  transition-property: color;
  transition-duration: 1s;
}

footer a:hover {
  color: #adbce6;
}

footer {
  clear: both;
  margin-left: 1%;
  padding-top: 5%;
  font-size: 12px;
  color: #777;
}

.key {
  height: 100px;
  width: 100%;
}

.key:hover {
  font-size: 0px;
}

.key:hover:after {
  content: attr(data-hover);
  font-size: 22px;
}

@media screen and (max-width: 1024px) {
  #wrap {
    width: 95%;
  }
}

@media screen and (max-width: 600px) {
  header h1 {
    font-size: 50px;
  }

  #wrap {
    width: 100%;
  }

  nav li {
    display: block;
  }

  section {
    float: none;
  }
}