body {
  font-family: Arial, sans-serif;
  background: #f2f2f2;
}

.container {
  max-width: 600px;
  margin: 30px auto;
  background: white;
  padding: 20px;
  border-radius: 10px;
}

h1 {
  text-align: center;
}

.soal {
  margin-bottom: 20px;
}

button {
  width: 100%;
  padding: 12px;
  background: #2e86de;
  color: white;
  border: none;
  font-size: 16px;
  cursor: pointer;
}