.collapsible__header {
  align-items: center;
  display: flex;
}
.collapsible__heading {
  cursor: pointer;
  font-weight: 700;
}
.collapsible__icon {
  height: 1rem;
  margin-left: 1rem;
  width: 1rem;
}
.collapsible__content {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: all .2s;
}
.collapsible--expanded .collapsible__content {
  max-height: 100vh;
  opacity: 1;
}
.collapsible--expanded .collapsible__icon {
  transform: rotate(90deg);
}