Hello Real_Dani7,
Apple Support Communities is a great place for help! From the screenshot you provided it appears that the Apple Library isn’t opening on the entire screen as it should. Since having this issue have you restarted the iPhone? If not, restarting can help with reaching a resolution. You can find the steps for restarting in the following article.
Restart your iPhone
If you continue to have issues after restarting please let use now, along with more information about the issue you’re facing.
Have a great day!