msite sticky category its working only in mobile apps like redmart.com

msite sticky category its working only in mobile apps like redmart.com

I am working on msite design with jquery  i had problem when i click on top left its shows me all categories like Fruits & vegetables or Groceries & staples  when i scroll it i want Groceries and staples should be stick to header basically its all about categories when scroll it should be stick to header again i scroll next category its also stick (for e.g: we can see in redmart.com mobile app )