header {
  margin-top: 2rem;
  margin-bottom: 4rem;
}

.vertical-space {
  width: 100%;
  height: 1px;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.heading h1, .heading h2 {
  text-align: center;
}

svg {
  height: 800px;
}

#Alcohol, #connection-rectangle, #brain, #brain-projection, #human {
  opacity: 0;
}