Currently, the "Mark all read" footer below the article list is stretching 100% until the bottom of the page. Instead, it should be a fixed-height bar/button below the articles.

Why?

• If you have only a few articles unread left in your feed, the whole page essentially becomes a "mark all read" button.

• This leaves zero space to click on the page to switch between windows without clicking on the button:
  

In this scenario, I would instinctively, inadvertently click on "Mark all read" when trying to switch to the browser from Notepad. The white area in a website is usually safe to click. Not in FreshRSS.

• It's poor interface design. Buttons should be easily understood as such and not be a massive white space that occupies the whole page.