ALT text always covers part of the image

**Describe the bug**
As you can see in the screenshot, the ALT text covers the bottom part of the image. There is text there that I want to read. Please make it so that the ALT text can be collapsed or moved so it doesn't cover the image.

This is on phanpy.social, version 2024.05.15.6976191 on instance mstdn.social.

**To Reproduce**
View any image that
1. is large enough to go to the bottom of the screen
2. Has ALT text long enough to cover the image

**Expected behavior**
A way to collapse, close, or move the alt text so it doesn't cover the bottom of the image.

**Screenshots**

**Desktop (please complete the following information):**
- OS: Linux
- Browser Firefox
- Version 125.0.3

Reproduce the issue on phanpy.social using an image that reaches the bottom of the screen and has long ALT text, in Firefox if possible. Inspect how the image and ALT text are presented and choose a behavior that keeps the underlying image readable. Done means users can collapse, close, or move the ALT text without losing access to it.

Written by the indexing model from the issue text.