docs: importing the css file is required

Author: gabrieljablonski

README.md

@@ -87,9 +87,9 @@ You can import `node_modules/react-tooltip/dist/react-tooltip.[mode].js` into yo
 
 mode: `esm` `cjs` `umd`
 
-If you want to use default ReactTooltip styles, don't forget to import the styles: `node_modules/react-tooltip/dist/react-tooltip.css`
+Don't forget to import the CSS file from `node_modules/react-tooltip/dist/react-tooltip.css` to set default styling. This needs to be done only once in your application.
 
-PS: all the files has a minified version and a not minified version.
+PS: all the files have a minified version and a non-minified version.
 
 ![image](https://user-images.githubusercontent.com/9615850/205637814-c0ef01ae-bd77-4e7f-b4bf-df502c71e5c3.png)
 

docs/docs/examples/styling.mdx

@@ -365,8 +365,6 @@ import 'react-tooltip/dist/react-tooltip.css'
 
 #### Observation
 
-This doc is only if you are importing `import 'react-tooltip/dist/react-tooltip.css'`. If not, you can write your own CSS classes directly.
-
 With CSS specificity everything can be overridden if you know what are you doing.
 
 The necessity of `!important` was removed because `!important` cut a lot of levels/possibilities related to CSS specificity.