Website tribute about the centre of Aleppo (4,4)
I believe the answer is:
home page
'website' is the definition.
'tribute about the centre of aleppo' is the wordplay.
'tribute' becomes 'homage' (an homage is respect paid to someone).
'about' indicates putting letters inside.
'the centre of' says to take the centre.
The centre of 'aleppo' is 'ep'.
'homage' placed around 'ep' is 'HOME PAGE'.
(Other definitions for home page that I've seen before include "website feature" , "First point of call on website" , "introduction to site" , "First part of site" , "Website domain?" .)