html, body {
  height: 100%;
  background: var(--light);
}

.main-container {
  display: -ms-flexbox;
  display: flex;
  min-height: 100%;
}

.main-container.with-header {
  padding-top: 70px;
}

.main-container.with-footer {
  padding-bottom: 70px;
}

.btn {
  padding: .375rem 1rem;
}

.question-list {
  list-style: none;
  padding-left: 0;
  counter-reset: list-counter;
}

.question-list > .question-container {
  position: relative;
  counter-increment: list-counter;

  padding-left: 1.8rem;
  padding-bottom: 1.5rem;
  margin: 0;
}

.question-list > .question-container::before {
  position: absolute;
  height: 1.25rem;
  width: 1.25rem;
  top: 0.2rem;
  left: 0;

  display: flex;
  align-items: center;
  justify-content: center;

  text-align: center;
  line-height: 1.2rem;
  font-size: 0.8rem;

  content: counter(list-counter);
  color: var(--cyan);

  border-radius: 100%;
  border: 1.5px solid var(--cyan);
}

.question-list > .question-container::after {
  position: absolute;
  width: 0;
  top: 2rem;
  bottom: .5rem;
  left: 0.625rem;

  content: "";
  border-left: 1.5px solid var(--cyan);
}

.question-list > .question-container:last-child::after {
  border-left: 0;
}

.question-list > .question-container:last-child {
  padding-bottom: 0;
}

.custom-control-input:checked~.custom-control-label::before {
  border-color: var(--cyan);
  background-color: var(--cyan);
}

.btn.quiz-nav-btn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  border-radius: 0;
}