.quiz {
  position: relative;
  top: 17vh;
  display: flex;
  justify-content: center;
  padding-bottom: 10vh;
  width: 85%;
  margin: 0 auto;
}

.back {
  text-decoration: none;
  color: #333;
}

.text1 p {
  text-indent: 1em;
}

#Chapters {
  padding: 1rem;
  border-radius: 50px;
  border: 1px solid #333;
  cursor: pointer;
  color: #333;
  width: 10rem;
  margin-top: 1rem;
}

#start {
  padding: 1rem;
  border-radius: 50px;
  border: 1px solid #fff;
  background-image: linear-gradient(to left, #007bff, #429af8);
  cursor: pointer;
  color: white;
  transition: transform 0.2s, box-shadow 0.2s;
}