.exercises {
  counter-reset : h5;
  max-width: 1000px
}
h5 {
font-size: 20pt;
margin-top: 1.5rem;
margin-bottom: 1.5rem;
}
h5::before {
  content: "Question " counter(h5,decimal) ". ";
  counter-increment: h5;
  font-weight: bold;
}