Hi there!
Thanks for your query.
Would you please share your site URL here?
However, here is the sample code for you that need to put on your custom CSS:
.offcanvas-menu .offcanvas-inner ul.menu>li.menu-parent>a>.menu-toggler, .offcanvas-menu .offcanvas-inner ul.menu>li.menu-parent>.menu-separator>.menu-toggler {
width: 100%;
text-align: right;
}
Note: Path towards custom CSS: Extensions>Templates>Styles> Click on your current default template name then choose Template Options. Then find custom CSS within the custom code.
Best Regards