Warning message: sed: 1: "base.min.css": undefined label 'ase.min.css' (on MacOS's BSD sed)

Overwriting does not work properly with option `-i` of BSD sed (on MacOS).
I think adding option `-e` will give the desired behavior.
```sh
sed -i -e 's/;unicode-bidi:bidi-override//g' base.min.css
```