body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f0f4f8;
  margin: 0;
  padding: 0;
  text-align: center;
}

header {
  background-color: #4a90e2;
  color: white;
  padding: 20px;
}

.avatar {
  width: 120px;
  height: auto;
  border-radius: 50%;
  margin-top: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  padding: 20px;
}

.card {
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  padding: 15px;
}

button {
  background-color: #4a90e2;
  color: white;
  border: none;
  padding: 10px;
  margin-top: 10px;
  cursor: pointer;
  border-radius: 5px;
}

button:hover {
  background-color: #357ab8;
}

.oculto {
  display: none;
}

footer {
  background-color: #eee;
  padding: 10px;
}