The "Back" button in the experimental features details menu is placed too high

The Bug:

The "Back" button in the experimental features details menu is placed too high.

Steps to Reproduce:

• Navigate to the singleplayer menu.
• Click on the "Create New World" button.
• Click on the "Data Packs" button, select any of the experimental data packs that are available, and then hit the "Done" button.
• Now click the "Details" button and look at the positioning of the "Back" button within the experimental features details menu.
• Take note as to whether or not the "Back" button in the experimental features details menu is placed too high.

Observed Behavior:

The "Back" button is placed too high.

Expected Behavior:

The "Back" button would not be placed too high. Instead, it should be positioned a bit lower, just like how it is within other menus.