* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Segoe UI', sans-serif;
  background: #f7f7f7;
  color: #2d2d2d;
  line-height: 1.6;
}
header, footer {
  background: #2d572c;
  color: #fff;
  text-align: center;
  padding: 1rem;
}
header h1 {
  font-size: 1.5rem;
}
header p {
  font-size: 0.95rem;
  margin: 0.5rem 0;
}
nav {
  margin-top: 0.5rem;
}
nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 1rem;
  font-weight: bold;
}
nav a:hover {
  text-decoration: underline;
}
main {
  padding: 2rem;
  max-width: 960px;
  margin: auto;
  background: #fff;
}
img {
  width: 100%;
  max-width: 100%;
  border-radius: 6px;
  margin: 1rem 0;
}
footer {
  margin-top: 2rem;
}

@media screen and (max-width: 768px) {
  header h1 {
    font-size: 1.2rem;
  }
  nav a {
    display: block;
    margin: 0.5rem 0;
  }
  main {
    padding: 1rem;
  }
}