As both elements are inline/inline-block and belong to the same line
they can be aligned vertically using "vertical-align: middle".
Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>
When an image is being uploaded the upload icon is replaced by a loading
icon, so the loading icon and the upload icon have to share their CSS
rules, but only in that specific case; in general the loading icon is
used in a totally different way than the upload icon and thus it should
not share its CSS rules.
Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>
The removed rules were either always overriden by other rules or never
used due to not matching any element.
Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>