* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  color: #333;
  padding: 20px;
}

header {
  background-color: #4CAF50;
  color: white;
  padding: 20px 0;
  text-align: center;
  border-radius: 8px;
}

.imagem-topo img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  margin: 20px 0;
  border-radius: 8px;
}

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

h2 {
  color: #4CAF50;
  margin-bottom: 10px;
}

button,
.btn-video {
  background-color: #4CAF50;
  color: white;
  padding: 10px 15px;
  margin-top: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
}

button:hover,
.btn-video:hover {
  background-color: #388E3C;
}

.escondido {
  display: none;
  margin-top: 10px;
}

footer {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  width: 100%;
  border-top: 4px solid #4CAF50;
  border-radius: 8px;
}

footer a {
  color: #4CAF50;
  text-decoration: none;
}