a[href$='zless/toggle'] {
  color:inherit;
  font-weight:normal;
  padding-left: 1em;
  /* icone a venir */
}


.less-dev-mode a[href$='zless/toggle']::after {
  color:#0F0;
  font-weight: bold;
  content:'On';
  margin-left: 12px;
}

.less-prod-mode a[href$='zless/toggle']::after {
  font-weight:normal;
  margin-left: 12px;
  content:'OFF';
}