My question refers to the sidebar icons within the Sugarcube format (I am using Twine 1).
I would like to change the forward/back icons and implement my own ones. I could find out how to remove the icons before "Saves" and Restart", but I don't know how to target the forward/back ones and how it's possible to either replace them with a picture/ a text / or another font awesome icon (the existing ones are font awesome icons, or am I wrong?)
I disabled the existing buttons:
and made own forward/back buttons with the help of this thread
eg. Place the following within your story's script tagged passage:
note: I am assuming you are using SugarCube 2 because your solution included the #ui-bar-history based CSS selector and you mentioned side-bar icons in your original question. Although you did list Sugarcube in your original question which could be taken to mean SugarCube 1.