You may have logged into Clarity on a different browser or a different computer and noticed that the screen is not displaying like it used to. Ensure you are zoomed out to 80% to achieve the best display.
To do this click the 3 dots in your browser in the top right hand side.
This will avoid your screen being too zoomed in and having to scroll endlessly down a page. Here's what a page at 200% zoom looks like:
The above two screenshots are both on the same screen. One is heavily zoomed in while the other is at an optimal 80% zoom.