Apply suggestions from code review

Co-authored-by: Olivier Tassinari <olivier.tassinari@gmail.com>
Co-authored-by: Matt <github@nospam.33m.co>

docs/src/pages/components/tabs/AccessibleTabs.js

@@ -35,12 +35,11 @@ TabPanel.propTypes = {
   value: PropTypes.any.isRequired,
 };
 
-const useStyles = makeStyles((theme) => ({
+const useStyles = makeStyles({
   root: {
     flexGrow: 1,
-    backgroundColor: theme.palette.background.paper,
   },
-}));
+});
 
 export default function AccessibleTabs() {
   const classes = useStyles();

docs/src/pages/components/tabs/AccessibleTabs.tsx

@@ -34,12 +34,11 @@ function TabPanel(props: TabPanelProps) {
   );
 }
 
-const useStyles = makeStyles((theme: Theme) => ({
+const useStyles = makeStyles({
   root: {
     flexGrow: 1,
-    backgroundColor: theme.palette.background.paper,
   },
-}));
+});
 
 export default function AccessibleTabs() {
   const classes = useStyles();

docs/src/pages/components/tabs/tabs.md

@@ -95,19 +95,19 @@ Tab labels may be either all icons or all text.
 
 (WAI-ARIA: https://www.w3.org/TR/wai-aria-practices/#tabpanel)
 
-This section lists necessary steps to provide necessary information for assistive technology:
+The following steps are needed in order to provide necessary information for assistive technologies:
 
-1. label `Tabs` via `aria-label` or `aria-labelledby`
+1. Label `Tabs` via `aria-label` or `aria-labelledby`.
 2. `Tab`s need to be connected to their
-corresponding `[role="tabpanel"]` by setting the correct `id`, `aria-controls` and `aria-labelledby`
+corresponding `[role="tabpanel"]` by setting the correct `id`, `aria-controls` and `aria-labelledby`.
 
 An example for the current implementation can be found in the demos on this page. We've also published an experimental API in `@material-ui/lab` that does not require
 extra work.
 
 ### Keyboard navigation
 
 The components implement keyboard navigation using the "manual activation" behavior. If you want to switch to the
-"selection automatically follows focus" behavior you have pass `selectionFollowsFocus` to the `Tabs` component. The WAI-ARIA authoring practices have a detailed guide on [how to decide then to make selection automatically follow focus](https://www.w3.org/TR/wai-aria-practices/#kbd_selection_follows_focus).
+"selection automatically follows focus" behavior you have pass `selectionFollowsFocus` to the `Tabs` component. The WAI-ARIA authoring practices have a detailed guide on [how to decide when to make selection automatically follow focus](https://www.w3.org/TR/wai-aria-practices/#kbd_selection_follows_focus).
 
 ### Demo