How to change header component in TitledPane in JavaFX

Question

I cannot find an answer about this anywhere on the internet.

I have an application that has to have collapsable panels, so the TitledPane and Accordion set-up in Jav

Answer 1

This is how you remove the arrow:

.titled-pane > .title > .arrow-button > .arrow{
    -fx-shape: null;
}