body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to bottom, #e0e0e0, #9e9e9e);
  margin: 0;
  padding: 0;
  color: #212121;
}

header {
  background-color: #424242;
  text-align: center;
  padding: 1.5em 1em;
  border-bottom: 4px solid #212121;
}

header h1 {
  margin: 0.2em 0;
  font-size: 2em;
  color: #ffffff;
}

.flag {
  width: 80px;
  display: block;
  margin: 0 auto 1em auto;
}

.intro, .list, .non-direct {
  max-width: 800px;
  margin: 2em auto;
  padding: 1em 2em;
  background-color: #f5f5f5;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

h2 {
  color: #424242;
}

ul {
  list-style: square;
  padding-left: 1.5em;
}

footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2em 1em;
  background-color: #bdbdbd;
  border-top: 2px solid #757575;
  color: #212121;
  font-size: 0.9em;
  font-style: italic;
}

footer .nav-arrow {
  font-size: 1.2em;
  color: #212121;
  text-decoration: none;
  padding: 0.5em 1em;
  transition: background 0.2s;
}

footer .nav-arrow:hover {
  background-color: #eeeeee;
  border-radius: 4px;
}

footer .footer-text {
  flex-grow: 1;
  text-align: center;
}