details[open] > summary:first-of-type {
  list-style-type: none;
  font-size: 1.84rem;
}

details[open] > summary:first-of-type::marker, /* Latest Chrome, Edge, Firefox */ 
details[open] > summary:first-of-type::-webkit-details-marker{ /* Latest Chrome, Edge, Firefox */ 
  display: none;
}


.removable-string { display: none; }
.removable-string:checked + label { display: none; }
.removable-string:checked + label + br { display: none; }

pre { line-height: 142%; }