body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background-color: #f7f7f7;
  color: #333;
}

header .banner {
  width: 100%;
  height: auto;
  display: block;
}

main {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.intro, .aims {
  padding: 2rem 1rem;
}

h1, h2 {
  color: #004d40;
}

ul {
  list-style: disc inside;
}

footer {
  text-align: center;
  padding: 1rem;
  background: #004d40;
  color: #fff;
  margin-top: 2rem;
}