Hi Ed,
I'm glad you're enjoying your new Floorp browser! As of my understanding, the Floorp browser doesn't have a built-in option to hide the side bar or open it with a mouse-over. However, there are a couple of workarounds you can try to gain more screen real estate when you don't need the side bar.
1. Full-Screen Mode:
One option is to use the browser in full-screen mode. Most modern web browsers have a full-screen mode that hides all toolbars and sidebars, giving you maximum screen space for browsing. You can activate full-screen mode by pressing the F11 key on your keyboard. When you need to access the side bar, simply move your mouse to the top of the screen to reveal the browser's menus and exit the full-screen mode.
2. Custom CSS/Extensions:
Another option is to use custom CSS or browser extensions to hide or modify the appearance of the side bar. This method requires some technical knowledge and may not be suitable for everyone. If you are comfortable with CSS, you can try injecting custom CSS code to hide the side bar. If you're not familiar with CSS, you can search for browser extensions or add-ons that provide customization options for hiding or modifying the side bar. These extensions can vary depending on the browser you're using.
Keep in mind that these workarounds may not be as seamless as having a built-in feature in the browser, but they can help maximize your screen real estate when you don't need the side bar.
I hope these suggestions help! Let me know if you have any further questions.