Here is an example:

First - how it looks in Chrome, second -in Firefox (hardly readable).

CSS:

```
 font-family: Arial,Liberation Sans,DejaVu Sans,sans-serif;
    font-size: 13px;

```

Can you please provide an example, how I can make this element's font bold only if browser is Firefox?

![enter image description here](https://i.stack.imgur.com/VjYU3.png)