Power BIQuick Tips For Formatting SSRS Reports
The tips for formating SSRS reports have been covered here.
The Default margin settings have been given as to avoid the blank page issue And give the report a formal look.
Also, how to Align Page Number in center of the page has been showed.
Default margin settings:-
Aligning Page Number in center of the page :-
Select Page Number Text Box-> Format->Center in Form
Hope this helps!
For more such blogs refer the below link.