body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #0b1d2a;
  color: white;
  text-align: center;
}

header {
  padding: 20px 0;
}

.logo {
  max-width: 250px;
  margin-bottom: 10px;
}

nav {
  background-color: #13293d;
  padding: 12px;
}

nav a {
  color: #ffffff;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1em;
}

main {
  padding: 20px;
}

.intro h1 {
  font-size: 24px;
}

.intro p {
  font-size: 18px;
  max-width: 800px;
  margin: 20px auto;
  font-weight: 500;
}

.certifications {
  margin-top: 40px;
}

.certifications img {
  height: 80px;
  margin: 10px;
  vertical-align: middle;
  background-color: white;
  border-radius: 4px;
  padding: 4px;
}

.partners {
  margin-top: 40px;
}

.partners ul {
  list-style-type: none;
  padding: 0;
}

.partners li {
  margin: 5px 0;
}

.partners a {
  color: #ffffff;
  text-decoration: underline;
}

footer {
  margin-top: 60px;
  font-size: 0.9em;
  color: #ccc;
  padding-bottom: 40px;
}