I’ve pressed the tab on the poem text to indent into the middle of the page.
This shows up on my page view but when I upload it, the type does not change.
HTML compresses all repeated white-space characters (tab, space, etc.) into a single visible space on screen. If you want to indent, you can either use non-breaking spaces (option-space) or you can use style (padding, left-margin) to accomplish the indent. I would DEFINITELY use the style, not the spaces, since you’ll get a more predictable result.
I’ve pressed the tab on the poem text to indent into the middle of the page.
This shows up on my page view but when I upload it, the type does not change.