1513322 - Try out larger padding in Inspector panes

Status: NEW

(DevTools :: Inspector, enhancement, P3)

Description

[Florens Verschelde :fvsch]

After discussions with Victoria and Matt, we think it might be worthwhile to use slightly larger padding in most panes in Inspector.

We roughly have two types of panes:

1. Some with large horizontal padding, around 20px (Fonts, Layout). Implementation can vary, we have some 18px and some 21px, so we'd like to make everything a neat 20px.
2. Some with more compact horizontal padding, currently at 4px (e.g. Rules). We'd like to try 8px horizontal padding there (and probably 4px vertical padding, so `padding: 4px 8px;`), to make the gap between the two types of panes less jarring.

I'll try to implement that and provide a patch and a Mac test build for design review.