Css React dont work

I have a project created with rails and react, I use webpacker, install mdbootstrap react version with ./bin/yarn add mdbreact which install it correctly, but when creating a navbar component, do not add any style to the component.

Somebody could help me

this is my package.json

{ "name": "mi_turno_sass", "private": true, "dependencies": { "@rails/webpacker": "3.5", "babel-preset-react": "^6.24.1", "mdbreact": "^4.9.0", "prop-types": "^15.6.2", "react": "^16.7.0", "react-dom": "^16.7.0", "react-router-dom": "^4.3.1", "webpacker-react": "^0.3.2" }, "devDependencies": { "webpack-dev-server": "2.11.2" } }

and this is my component

import React, { Component } from "react"; import { MDBNavbar, MDBNavbarBrand, MDBNavbarNav, MDBNavItem, MDBNavLink, MDBNavbarToggler, MDBCollapse, MDBFormInline, MDBDropdown, MDBDropdownToggle, MDBDropdownMenu, MDBDropdownItem, MDBContainer, MDBIcon } from "mdbreact"; import { BrowserRouter as Router } from 'react-router-dom';

class NavbarPage extends Component { state = { collapseID: "" };

toggleCollapse = collapseID => () => this.setState(prevState => ({ collapseID: prevState.collapseID !== collapseID ? collapseID : "" }));

render() { return ( MDB Home Link Profile MDB Home Link Profile MDB Home Link Profile MDB Home Link Profile MDBNavbar Home Features Pricing MDBDropdown Action Another Action Something else here Something else here MDBNavbar Home Features Pricing MDBDropdown Action Another Action Something else here Something else here Action Another Action Something else here Something else here MDBNavbar Contact Settings Profile My account Log out MDBNavbar Home Features Pricing MDBDropdown Action Another Action Something else here Something else here

class NavbarPage extends Component { state = { collapseID: "" };

toggleCollapse = collapseID => () => this.setState(prevState => ({ collapseID: prevState.collapseID !== collapseID ? collapseID : "" }));

render() { return ( MDB Home Link Profile MDB Home Link Profile MDB Home Link Profile MDB Home Link Profile MDBNavbar Home Features Pricing MDBDropdown Action Another Action Something else here Something else here MDBNavbar Home Features Pricing MDBDropdown Action Another Action Something else here Something else here Action Another Action Something else here Something else here MDBNavbar Contact Settings Profile My account Log out MDBNavbar Home Features Pricing MDBDropdown Action Another Action Something else here Something else here 1 My account Log out ); } }

export default NavbarPage; assName="waves-effect waves-light d-flex align-items-center" to="#!">1 My account Log out ); } }

export default NavbarPage;