Footer can be maintained if layer of Footer is changed z-index to 3, it will be visible to be edited and after all edits you remove z-index

If Footer is to complex to maintain, delete Footer and Helper layer on each page. After that add Footer component from the assets panel.

Inside of the Footer component you can do all the adjustments you need and reflect it everywhere by adding component to each page as last layer. Remember there are responsive variants of the footer for each responsive screen.