how to update material ui styles code example

Example 1: adding style to root material ui

<Button
  classes={{
    root: classes.root, // class name, e.g. `classes-nesting-root-x`
    label: classes.label, // class name, e.g. `classes-nesting-label-x`
  }}
>
  classes nesting
</Button>

Example 2: material ui common styles

// with npm
npm install @material-ui/styles

// with yarn
yarn add @material-ui/styles