body {
  font-family: Arial, sans-serif;
  background-color: #f0f0f0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

#quiz-container, #welcome-screen {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  width: 400px;
}

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

#options {
  list-style-type: none;
  padding: 0;
}

#options li {
  margin-bottom: 10px;
}

#options button {
  width: 100%;
  padding: 10px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
}

#options button:hover {
  background-color: #0056b3;
}

#next {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

#next:hover {
  background-color: #218838;
}

#timer, #feedback {
  margin-top: 20px;
  font-size: 16px;
}

#feedback {
  font-weight: bold;
}

#time {
  font-weight: bold;
}

#start-quiz-form {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#start-quiz-form input[type="text"] {
  margin: 10px 0;
  padding: 10px;
  border-radius: 5px;
  border: 1px solid #ddd;
}

#start-quiz-form button {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

#start-quiz-form button:hover {
  background-color: #0056b3;
}