Fossil

   child content (plain text and/or DOM elements) gets moved out of
   the DOM and shown in a singleton popup when they are clicked. They
   may be SPAN elements if their children are all inline elements,
   otherwise they must be DIVs (block elements) so that nesting of
   block-element content is legal.
*/
.help-buttonlet {
  display: inline-block;
  min-width: 1rem;
  max-width: 1rem;
  min-height: 1rem;
  max-height: 1rem;
  font-size: 0.9em;
  border-radius: 0.5rem;
  background-color: rgba(54, 54, 255,1);
  color: rgb(255, 255, 255);
  cursor: pointer;
  font-family: monspace;
  text-align: center;
  margin: 0 0 0 0.35em;
  border-width: 1px;
  border-style: outset;
  font-weight: 700;
  overflow: hidden;
}

.help-buttonlet::before {
  content: "?";
}