body {
  font-family: Arial, sans-serif;
  background-color: #0c1c24;
  padding: 20px;
  color: #ffffff;
}

.container {
  max-width: 800px;
  margin: auto;
  background: #112d3c;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

h1, h2 {
  text-align: left;
  color: #00aaff;
}

.question-block {
  margin-bottom: 20px;
}

label {
  display: block;
  margin: 5px 0;
}

button {
  display: block;
  margin: 20px auto;
  padding: 12px 30px;
  font-size: 16px;
  cursor: pointer;
  background-color: #00aaff;
  color: white;
  border: none;
  border-radius: 5px;
}

.hidden {
  display: none;
}

.bar {
  height: 24px;
  background-color: #00aaff;
  margin-bottom: 10px;
  color: white;
  text-align: center;
  border-radius: 4px;
}

img.logo {
  display: block;
  max-width: 200px;
  margin: 0 auto 30px auto;
}