   right: 0.5em; 
  			}
  		}
  		.toggle-text-grade {
  		  position: fixed; 
  		  top: 0.5em; 
  		  right: 0.5em; 
  		  z-index: 999;
  		}
  		@media (min-width: 30em) {
  			.toggle-text-grade {
  			    top: 2.75em; 
  			}
  		}
  		.toggle-text-inverse.on:after, 
  		.toggle-text-grade.on:after {
  		  content: ": on";
  		}
  		.toggle-text-inverse.off:after, 
  		.toggle-text-grade.off:after {
  		  content: ": off";
  		}
  	</style>
  		
  	<script>
  		if (!'classList' in document.createElem