added background color to panel where tabs component is used
added background color to panel where tabs component is used

storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,kadirahq/react-storybook,kadirahq/react-storybook,storybooks/storybook,storybooks/react-storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook