Bug 974867 - [MMS]Auto suggestion for email address r=Julien

https://bugzilla.mozilla.org/show_bug.cgi?id=974867
1.7rem + 1.5rem = 3.2rem, and I assume 0.5rem is for the distance between the email icon and the text. So `padding-right: 3.8rem` looks right.

Now, the other paddings are already set elsewhere, you don't need them. You only need to override padding-right.