Resizing the window/responsivity is not well done

When you try to resize the window:

• The resize hander when hovering over the border of the window is hard to get
• The elements inside the window are not gradually resizing. This could be better.
• Changing the width, circles become ovals and then are displaced, along with other icons.
• Version number is not resized with the logo.
• Elements in the header overlap.
• The settings window is affected as well.
• Elements in the results list overlap and are partially displaced.