Restaurant website design is a tricky thing. First thing you need to consider is why do people go to restaurants? To have a delicious meal, to spend quality time with friends, to celebrate a special event or simply to relax in a nice and cosy ambience.
The second thing that must be taken into account is the guests that will come to your restaurant most often. To identify the target group, you must analyze the surrounding where the restaurant is located and the cuisine it will offer to the guests.