? template problem

Just bought the forum.
Please see pic, what's going on with the Post, Edit and blank window under the breadcrumb.
Need help please.
Thanks

Right click on the offending element, "Inspect", and it should have a list of CSS rules applying to it. Should help narrow down which rule is doing it then you can edit your CSS template and add :not(.ui) to the selector.

Thanks for this. Will try it.

I removed it, using CSS.
​
#ttr_content .modal {
display:none;

Question
Is this correct? How does one know whether it should be solved with CSS or some other code.
For eg is it possible that this solution breaks some other functionality that is not yet apparent ?