/* General styles */
body {
  font-family: 'Open Sans', sans-serif;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  text-align: center;
  font-family: 'Oswald', sans-serif;
  font-size: 22px;
  padding: 20px;
  color: white;
  background-color: black;
}

header .nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
}

header .nav li {
  margin: 0 15px;
}

header .nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.sec-intro {
  background-color: #f4f4f4;
  padding: 20px;
  text-align: center;
}

.sec-intro h1 {
  font-family: 'Oswald', sans-serif;
  font-size: 28px;
  margin: 0;
}

.sec-sources {
  padding: 20px;
  margin: 0 10%;
}

.source-item {
  background-color: #ffffff;
  border-radius: 6px;
  padding: 15px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.source-item h2 {
  font-family: 'Oswald', sans-serif;
  font-size: 22px;
  margin-top: 0;
}

.source-item p {
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
}

.source-item a {
  color: #2196F3;
  text-decoration: none;
}

.source-item a:hover {
  text-decoration: underline;
}