Remove Footer Section

Hey everyone,

I just started with my blog and I am very happy with my anissa theme. The only thing I would like to change is the footer section: http://liesschenmueller.de
Is there any possibility to remove two of the three footer widget sections? I would like to spread one single footer widget over the whole page so I can show my instagram feed spread wider.
Would be great if anyone could help me 🙂

Thanks in advance!