Hold the mouse button down (anywhere on the page) while you select all (Ctrl+A) and then copy (Ctrl+C).
OR
After selecting everything you want with the mouse, try Ctrl+A and Ctrl+C before you release the mouse button.
Hold the mouse button down (anywhere on the page) while you select all (Ctrl+A) and then copy (Ctrl+C).
OR
After selecting everything you want with the mouse, try Ctrl+A and Ctrl+C before you release the mouse button.