After recent update some of my styling gone
The top and bottom of the page looks wrong
Can you advise what happened?

My link is being recognised as spam for some reason, but wanted to leave something for the refference

so here you go:

mydreamwedding(dot)ie/inspiration/planning-by-colours/item/10-pink-to-make-the-boys-wink

Hi. Probably you had modified core K2 files. In order to make changes to k2.css you just copy it from /components/com_k2/css/k2.css to /templates/YOUR_TEMPLATE/css/k2.css. This way your changes are not affected by future updates. Regarding HTML markup changes once again hacking core files is not a good practice. In order to change K2 HTML output you need to make an override. More on this can be found at getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates .

Definitely I didn't edit anything so far

The CSS and HTML markup of the toolbar for example have not been changed in the recent versions. So the only way they changed is that you had modified core K2 files or you were using a really old version of K2.