Can I edit the image of an arrow in the Expand macro?

[MITUL PATEL]

When we click on the arrow in Expand macro, the text to be expanded is displayed. i would like to change the image of that arrow to a custom image. Is it possible by editing the macro?

[Steven F Behnke]

The easiest way in Confluence Server would be to add a bit to the Global Stylesheet to override this – 

The image is provided some CSS attributed to the .expand-control-icon CSS class.

.expand-control-icon {
    url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAQAAAC1+jfqAAAALElEQVQoz2NgGGSg4EzBTPwKOgr+F6ThVzKTsJK7Bf/JN4GgG4C+6GAYigAASNYUTGaVYwsAAAAASUVORK5CYII=)
}