Hello,
I see that you need two different things, which I both can deliver to you.
To start with the CSS part, I have three years of experience with writing CSS in all different browsers and on all sorts of screens, so I am sure that I can update your web app's CSS in a short timespan.
For the parcel label, I can design one for you and deliver it as any type of file.
Also if you have more jobs like this in the future and if you are satisfied with my work, a long term relationship would be nice.
If this sounds good to you, (and I hope it does) I would be happy to discuss this project further with you soon.
Yours sincerely,
Wouter Raateland