body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
}
header {
  text-align: center;
  background: #2c3e50;
  color: white;
  padding: 0.5rem 1rem;
}
.logo {
  max-width: 70px;
  margin-bottom: 0.5rem;
}
section {
  padding: 0rem 1rem;
}
h2 {
  color: #34495e;
}
ul {
  list-style: none;
  padding: 0;
}
li {
  margin-bottom: 0.5rem;
}
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #3498db;
  color: white;
  text-decoration: none;
  border-radius: 4px;
}
.btn:hover {
  background: #2980b9;
}
footer {
  text-align: center;
  padding: 1rem;
  background: #ecf0f1;
}