### Current situation

* The LSG is outdated at many places. This makes it hard to find correct  HTML structures when Begin of the insertionneeded.End of the insertion Begin of the deletion needed. End of the deletion
* This is part of the reason why we do not consistently use the classes in our system, even for standard elements. As another result the styling is often broken because of the wrong classes used.

### Expected

In order to reduce the struggle we have, we should invest some time and update the LSG. Thus it shall get easier later to use standard elements.

This consists of Begin of the insertionthreeEnd of the insertion Begin of the deletion twoEnd of the deletion tasks:

1. Go to the LSG and search for elements that are defined there, but never used (remove the entry from the LSG and styles if they exist).
* e.g: One example I found while creating this ticket: Grid Table
2. Begin of the insertion Go to the LSG and look for things that look weird (e.g. missing icons, headers without content, misplaced elements)  (update or remove them)
* e.g: Links defined in the code block, but not shown;
* A strange looking modal with misplaced closing icon
* An empty "My page" headline with content.
3.End of the insertion Add missing parts to the LSG .
* e.g. One example can be found here: #19014