Linked image doesn't work properly

I added a widget block to my site http://www.villabalibreeze.de to refer people to my Facebook page. I adjusted a link to the image of the page. Strange enough the link only works when I go over the top of the image. The biggest part of the image isn’t linked this way. Any solution? Thanks for your reply.

https://ww.wp.xz.cn/plugins/wysiwyg-widgets/