body {
  font-family: Arial, sans-serif;
  padding: 40px;
  background: #f7f7f7;
  color: #222;
}

h1 {
  margin-top: 0;
}

button {
  padding: 10px 14px;
  border: none;
  background: #111;
  color: white;
  border-radius: 8px;
  cursor: pointer;
}

#list {
  margin-top: 20px;
}

.card {
  background: white;
  padding: 14px;
  border-radius: 10px;
  margin-bottom: 12px;
  border: 1px solid #ddd;
}