css in backend

[domotiqa]

Hello,
When trying to view the listbox of the direct curve link in HL/SL, the window is very small. It put category name... so you can't see the whole name.
I try to put the css:

/* taille fenetre choix courbes adaptee largeur */
.x-menu-list {
  background-color: #f0f0f0;
  overflow: scroll;
  overflow-y: scroll;
  width: fit-content;
}



However it's not working on backend scada-main. This css work only on frontend scada-vis.

Is there a trick ? Maybe JS ?
Regards