img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

select {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}


.image-container {
  display: flex;
  justify-items: center;
  justify-content: center;
  height: 30vh;
}


@media only screen and (max-width: 600px) {
  .question-container {
    height: 50vh;
  }
}

@media only screen and (min-width: 601px) and (max-width: 1024px) {
  .question-container {
    height: 30vh;
  }
}

@media only screen and (min-width: 1025px) {
  .question-container {
    height: 30vh;
  }
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

nav {
  background-color: #333;
  color: #fff;
  padding: 10px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

.page {
  display: none;
}

#start-page {
  display: block;
}

button {
  padding: 10px 20px;
  background-color: #333;
  color: #fff;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #555;
}

#options {
  margin-top: 10px;
}

#options label {
  display: block;
  margin-bottom: 5px;
}

/* New styles for question list and review questions */
#question-list {
  display: flex;
  justify-content: left;
  margin-top: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.circle {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: #888;
  margin: 5px 5px;
  cursor: pointer;
  text-align: center;
  color: #fff;
  line-height: 2rem;
}

.circle.active {
  background-color: #333;
}

#review-questions {
  display: none;
  margin-top: 20px;
}

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

/* Styles for selected and correct answers during review */

.wrong {
  background-color: #fdd;
}

.correct {
  background-color: #dfd;
}