- Always use constraints to place elements rather than x and y coordinates.
- Always check the rendering on different devices.
Put an element at the bottom on the iPhone X
- Select the element to place
- Add a constraint of "Bottom space" to 0.
- Open the "Constraints editor" (5th icon in the right panel).
- Double-click on the constraint that has just been created (Bottom Space to: Bottom layout)
- Set First item as "Superview"