diff --git a/docs/screenshot_firefox_1.png b/docs/screenshot_firefox_1.png new file mode 100644 index 0000000..7a822ef Binary files /dev/null and b/docs/screenshot_firefox_1.png differ diff --git a/docs/screenshot_firefox_2.png b/docs/screenshot_firefox_2.png new file mode 100644 index 0000000..c366f5a Binary files /dev/null and b/docs/screenshot_firefox_2.png differ diff --git a/docs/screenshot_firefox_3.png b/docs/screenshot_firefox_3.png new file mode 100644 index 0000000..bd155b9 Binary files /dev/null and b/docs/screenshot_firefox_3.png differ