body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  padding: 40px;
}

#app {
  max-width: 600px;
  margin: auto;
  background: white;
  padding: 30px;
  border-radius: 8px;
}

.hidden {
  display: none;
}

#questionImage {
  display: block;
  margin: 10px auto;
  max-height: 43vh;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}


button {
  padding: 10px 16px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 10px;
}

#choices button {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  padding: 10px 14px;
  font-size: 16px;
  min-width: 80px;
}

#feedback {
  margin-top: 15px;
  font-size: 18px;
  font-weight: bold;
}

.correct {
  color: green;
}

.incorrect {
  color: red;
}

#continueBtn {
  margin-top: 15px;
  padding: 10px 16px;
  font-size: 16px;
  cursor: pointer;
}

.hidden {
  display: none;
}