body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  padding-top: 80px;
}

.topo {
  position: fixed;
  top: 0;
  width: 100%;
  height: 80px;
  background-color: #A5EBAC;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
}

h1 {
  margin: 0;
}

main {
  max-width: 900px;
  margin: 100px auto 20px auto;
  padding: 20px;
}


.intro {
  font-size: 18px;
  margin-bottom: 20px;
}

.cards {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.card {
  background: #eee;
  width: 220px;
  padding: 15px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.card img {
  width: 100%;
  border-radius: 10px;
}

.card h3 {
  margin: 10px 0 5px;
}

.card button {
  margin-top: 10px;
  padding: 8px 15px;
  border: none;
  background: #4CAF50;
  color: white;
  border-radius: 8px;
  cursor: pointer;
}

.card button:hover {
  background: #3e9142;
}

section {
  background: white;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

button {
  margin: 10px 5px;
  padding: 10px 20px;
  border: none;
  background-color: #4CAF50;
  color: white;
  cursor: pointer;
  border-radius: 8px;
  font-weight: bold;
}

button:hover {
  background-color: #3e9142;
}