body {
  margin: 0;
  font-family: 'Open Sans', sans-serif;
  background-color: #ffffff;
  color: #000000;
}
header {
  background-color: #001F3F;
  padding: 1em;
}
nav ul {
  list-style: none;
  display: flex;
  gap: 2em;
  justify-content: center;
  margin: 0;
  padding: 0;
}
nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}
.intro {
  padding: 2em;
  max-width: 800px;
  margin: auto;
  text-align: center;
}
footer {
  background-color: #001F3F;
  color: white;
  text-align: center;
  padding: 1em;
  position: relative;
  bottom: 0;
  width: 100%;
}