How can I adjust line height when using display system clipboard action?

Can I also use custom HTML prompt instead of display system clipboard, because it seems to be more flexible to adjust like font, line height...

Any one can share with me an example by using custom HTML prompt to achieve:

  1. custom font name, size, color
  2. custom line height
  3. custom window background color
  4. click ESC to close window
  5. float window