1) Transition effect on hover

Steps to reproduce

1.  Create a new module with LinkField
2.  Open the module
3.  Create new item

Expected results

Background of "x" button has animation transition (same as the "x" button in Tab).

Actual results

Background of "x" button has no animation.

2) Node icon isn't centred after a site resize

Steps to reproduce

1.  Create a new module with LinkField
2.  Open the module
3.  Create new item
4.  Choose an item from datasource
5.  Resize site
6.  Watch icon next to item name/path

Expected results

The icon stays centred when the site is resized.

Actual results

The icon isn't centred when the site is resized.

Development notes

LinkField CSS style is defined in: 
magnolia-resurface-theme/src/main/resources/VAADIN/themes/resurface/linkfield.scss