0.75);
}
.element input[type="radio"].activate:checked ~ .square .atomic-weight {
  opacity: 1;
  transition: 500ms;
}
.element input[type="radio"].activate:checked ~ .square .model {
  display: block;
  animation: fade-in;
  animation-duration: 1s;
}
.element input[type="radio"].activate:checked ~ .square .orbital {
  animation-name: rotate;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
.element input[type="radio"].deactivate {
  position: fixed;
  display: block;
  z-index: