So, in trying this specifically:
.fr-wrapper ::selection {
background: hsla(120, 100%, 50%, 0.5)(var(--xf-editorSelectionBg));
color: hsla(120, 100%, 50%, 0.5)(var(--xf-editorSelectionColor));
}
Still does not produce the intended result. I am sure I am doing something wrong. I save my...