.checklist {
  z-index: 20;
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: calc(100vh - 3rem);
  transform: translateZ(0) translateY(100vh);
  transition: transform 0.2s;
  background: white;
  color: black;
}
.checklist-open .checklist {
  transform: translateZ(0) translateY(0);
}