Ethics - W.D. Ross and Prima Facie?

W.D Ross offered Prima Facie Duties as an alternative to Kant's theory. He said that some duties were more important than others and that we cannot set our duties in stone.

For example Kant would say it's wrong to steal bread to feed your starving family, however Ross would say this is ok as your duty to you friends and family is more important. His approach is more flexible than Kant's and therefore more appealing as Kant's theory seems to be too restrictive at times. Hope this helps!

Thanks That does help. Im just wondering whether you could explain this bit to me..
Ross listed seven prima facie duties:

Fidelity
Reparation
Gratitude
Justice
Beneficence
Self-improvement
Non-maleficence (avoiding actions that do harm)

I do not understand what they are on about at all.