how to change look and feel of bonita forms for my process throughout system

i m using bonitasoft community version .

as per my need i make some changes in my process > resource > Bonita_from_default.css
but when i run / execute/ deploy process this modification shows only one time .
but when process start look and feel become default .

so how to apply this modification through out system

Did you tried to edit the css files in the platform, instead of just changing something in the process ?

Ya i tried in application > resource > bonitasoft_default.css
but i change only one time one form .
not all form .

it change only first form , and after when i try to start that process again through bonitasoft it again go to default look and feel