Hi valentino-craviari
1 - Another close button generated by a 3rd party extension on your site call 'com_baforms' , I override it by this css:
.t4-off-canvas-header button.close::after {
content: none;
}
2 - You can override this language constant: T4_OFF_CANVAS_TITLE in Backend >> Extensions >> Language >> Overrides
I just changed to Sidebar for example, you can edit again with your own text.
3 - To enlarge the off-canvas, you can override this css rule which I added into the 'custom.css' file:
.c-offcanvas--left {
width: 400px !important;
}
