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

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px;
  text-align: center;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 36px;
  margin-bottom: 40px;
}

.question {
  font-size: 24px;
  margin-bottom: 20px;
}

.choices {
  display: flex;
  flex-direction: column;
  margin-bottom: 20px;
}

.choices label {
  display: block;
  padding: 10px;
  border-radius: 5px;
  background-color: #eee;
  cursor: pointer;
}

.choices label:hover {
  background-color: #ddd;
}

.choices input[type="radio"] {
  display: none;
}

.choices input[type="radio"]:checked + label {
  background-color: #007bff;
  color: #fff;
}

.choice.correct {
  background-color: #6ab04c;
  color: white;
}

.choice.incorrect {
  background-color: #dc3545;
  color: white;
}

.result.correct {
  color: #6ab04c;
}

.result.incorrect {
  color: #dc3545;
}

.answer {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
}

.explanation {
  font-size: 14px;
  margin-bottom: 20px;
}


.submit {
  padding: 10px 20px;
  border-radius: 5px;
  background-color: #007bff;
  color: #fff;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s;
}

.submit:hover {
  background-color: #0056b3;
}

.result {
  font-size: 24px;
  margin-top: 20px;
}