body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background: #4CAF50;
  color: white;
  padding: 1em;
  text-align: center;
}

nav a {
  margin: 0 1em;
  color: white;
  text-decoration: none;
}

.animal-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  padding: 2em;
}

.animal-card {
  border: 1px solid #ccc;
  border-radius: 10px;
  margin: 1em;
  padding: 1em;
  width: 200px;
  text-align: center;
  background: #f9f9f9;
}

.animal-card img {
  width: 100%;
  border-radius: 5px;
}

.animal-detail {
  padding: 2em;
  text-align: center;
}

.animal-detail img {
  max-width: 400px;
  width: 100%;
  border-radius: 10px;
}

button {
  padding: 0.5em 1.5em;
  font-size: 1em;
  background: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

footer {
  background: #eee;
  text-align: center;
  padding: 1em;
  font-size: 0.9em;
}