[Bug]: Fix font for bullet points on presentation theme

### What happened?

The font for bullet points is quite large (when rendered via HTML), and ideally would need to be resized. Need to spend some time reflecting the appropriate font-size and adjusting as appropriate.

### Steps To Reproduce

View any presentations.

### What browsers are you seeing the problem on?

_No response_

### Relevant log output

```shell
N/A
```


### Anything else?

N/A