Made input-area border sizes consistent

**Expected:**
Border size should be consistent between normal and focus state.

**Actual:**
Border size changes from 2px normal state to 1px in focus state.

**Fix:**
Bootstrap uses 2px borders on inputs. It was winning for normal state but not for focus state. Preferred consistent 2px as defined by Bootstrap rather than a forced override.

**Bonus:**
Stops text inputs shifting around when focused/unfocused.

Signed-off-by: Tanya Gray <tanyagray.nz@gmail.com>