Added css for desktop

[mdictionary] / data / css_desktop / images / key-background.png

diff --git a/data/css_desktop/images/key-background.png b/data/css_desktop/images/key-background.png
new file mode 100755 (executable)
index 0000000..7a01218
Binary files /dev/null and b/data/css_desktop/images/key-background.png differ