How to go to a blank WordPress page?

Good afternoon, the question in the title is a bit chaotic, and probably not entirely accurate. The essence of the following. On the page there are several items of goods, these items can add to cart (data is written to LocalStorage). And there is a link where you need to go to another page, which should include the header, footer and, in fact, a dynamically created block with the data from LocalStorage, i.e. the list of goods that were selected. So, how to open (if I do in the direction move) a blank page with header and footer? How to upload data from localStorage, I know, I'm not clear just exactly how to create such a separate page. In the code about this as it is very chaotically written, I a little that understood))