Does your feature request involve difficulty for you to complete a task? Please describe.

Often I'm confused when I'm in a Readest ebook window to see the limit of the app because the "windowless" display hides the borders.
When other window are behind with same color (exemple Readest in light mode + around other Windows explorer windows in light mode).

I need to think to hover with mouse cursor the bottom or top border to make the buttons, titles, ... appear since it make a bit easier to guess Readest window borders location.
But it's still hard, I say "to guess" not "to see", for exemple when I want to grab the border to resize the window :

Describe the solution you'd like

Provide an option to :

• always show Readest buttons, title in top border
• add visible border to easily see the limit of the app and easier resize, move, ...

Additional context
OS : Windows 10 22H2