Improve layout of the findwindow by css

Description

In order to control the layout of the findwindow better, it is needed to add a couple of setclass to the html of the client.
In addition this also removes the black line below the findwindow.

Environment

None

Status

Assignee

Flemming Birch

Reporter

Flemming Birch

Labels

None

Tested By

None

Components

Fix versions

Priority

Trivial