The website I am currently building has one page living in the header/main navigation. That page has been built as a drop down to three subsequent pages.
I am looking to customize the experience on mobile. Currently when the hamburger is clicked on, the action will reveal the parent page, which leads to the three sub pages (I've attached imagery of the page path for context). I'd like to have the action be that when the hamburger is clicked on the three sub pages are revealed. Additionally, I would like the back text to read the name of the parent page (portfolio).
Any guidance on CSS would be greatly appreciated.
Many thanks in advance,