Responsive Global Navbar in Next.js with tailwindcss

A navbar is one of the most important parts of a website. Users don't know where to go without one. Lets dive into how to make a responsive navbar in Next.js with tailwindcss. I'll also show you how to make the navbar appear across all pages.

If you don't want to read the whole thing and just want the code go to https://github.com/dmuraco3/navbar

Setting up our environment

creating our project

npx create-next-app@latest navbar
cd navbar

installing Tailwind CSS

npm install -D tailwindcss postcss autoprefixer
npx tailwindcss init -p

configuring template paths

tailwind.config.js

module.exports = {
  content: [
    "./pages/**/*.{js,ts,jsx,tsx}",
    "./components/**/*.{js,ts,jsx,tsx}",
  ],
  theme: {
    extend: {},
  },
  plugins: [],
}

Add the Tailwind directives to your CSS
globals.css

...
@tailwind base;
@tailwind components;
@tailwind utilities;
...

now our environment is all set up and we're ready to go

Building our navbar

create a components folder in your root directory to keep components in.

in this folder make a new file called navbar.js

We're going to create three functions and import one

`navbar.js`

import {useState} from 'react'

function NavLink({to, children}) {

}
function MobileNav({open, setOpen}) {

}

export default function Navbar() {

}

Let's build the mobile nav first

`navbar.js`

...
function MobileNav({open, setOpen}) {
    return (
        <div className={`absolute top-0 left-0 h-screen w-screen bg-white transform ${open ? "-translate-x-0" : "-translate-x-full"} transition-transform duration-300 ease-in-out filter drop-shadow-md `}>
            <div className="flex items-center justify-center filter drop-shadow-md bg-white h-20"> {/*logo container*/}
                <a className="text-xl font-semibold" href="/">LOGO</a>
            </div>
            <div className="flex flex-col ml-4">
                <a className="text-xl font-medium my-4" href="/about" onClick={() => setTimeout(() => {setOpen(!open)}, 100)}>
                    About
                </a>
                <a className="text-xl font-normal my-4" href="/contact" onClick={() => setTimeout(() => {setOpen(!open)}, 100)}>
                    Contact
                </a>
            </div>  
        </div>
    )
}
...

now we can build our navbar

`navbar.js`

export default function Navbar() {
const [open, setOpen] = useState(false)
    return (
        <nav className="flex filter drop-shadow-md bg-white px-4 py-4 h-20 items-center">
            <MobileNav open={open} setOpen={setOpen}/>
            <div className="w-3/12 flex items-center">
                <a className="text-2xl font-semibold" href="/">LOGO</a>
            </div>
            <div className="w-9/12 flex justify-end items-center">

                <div className="z-50 flex relative w-8 h-8 flex-col justify-between items-center md:hidden" onClick={() => {
                    setOpen(!open)
                }}>
                    {/* hamburger button */}
                    <span className={`h-1 w-full bg-black rounded-lg transform transition duration-300 ease-in-out ${open ? "rotate-45 translate-y-3.5" : ""}`} />
                    <span className={`h-1 w-full bg-black rounded-lg transition-all duration-300 ease-in-out ${open ? "w-0" : "w-full"}`} />
                    <span className={`h-1 w-full bg-black rounded-lg transform transition duration-300 ease-in-out ${open ? "-rotate-45 -translate-y-3.5" : ""}`} />
                </div>

                <div className="hidden md:flex">
                    <NavLink to="/contact">
                        CONTACT
                    </NavLink>
                    <NavLink to="/about">
                        ABOUT
                    </NavLink>
                </div>
            </div>
        </nav>
    )
}

Now our navbar depends on NavLink which is a pretty simple component so lets whip that up real quick

`navbar.js`

function NavLink({to, children}) {
    return <a href={to} className={`mx-4`}>
        {children}
    </a>
}

Now put that all together and we get

`navbar.js`

import { useState } from 'react'

function NavLink({to, children}) {
    return <a href={to} className={`mx-4`}>
        {children}
    </a>
}

function MobileNav({open, setOpen}) {
    return (
        <div className={`absolute top-0 left-0 h-screen w-screen bg-white transform ${open ? "-translate-x-0" : "-translate-x-full"} transition-transform duration-300 ease-in-out filter drop-shadow-md `}>
            <div className="flex items-center justify-center filter drop-shadow-md bg-white h-20"> {/*logo container*/}
                <a className="text-xl font-semibold" href="/">LOGO</a>
            </div>
            <div className="flex flex-col ml-4">
                <a className="text-xl font-medium my-4" href="/about" onClick={() => setTimeout(() => {setOpen(!open)}, 100)}>
                    About
                </a>
                <a className="text-xl font-normal my-4" href="/contact" onClick={() => setTimeout(() => {setOpen(!open)}, 100)}>
                    Contact
                </a>
            </div>  
        </div>
    )
}

export default function Navbar() {

    const [open, setOpen] = useState(false)
    return (
        <nav className="flex filter drop-shadow-md bg-white px-4 py-4 h-20 items-center">
            <MobileNav open={open} setOpen={setOpen}/>
            <div className="w-3/12 flex items-center">
                <a className="text-2xl font-semibold" href="/">LOGO</a>
            </div>
            <div className="w-9/12 flex justify-end items-center">

                <div className="z-50 flex relative w-8 h-8 flex-col justify-between items-center md:hidden" onClick={() => {
                    setOpen(!open)
                }}>
                    {/* hamburger button */}
                    <span className={`h-1 w-full bg-black rounded-lg transform transition duration-300 ease-in-out ${open ? "rotate-45 translate-y-3.5" : ""}`} />
                    <span className={`h-1 w-full bg-black rounded-lg transition-all duration-300 ease-in-out ${open ? "w-0" : "w-full"}`} />
                    <span className={`h-1 w-full bg-black rounded-lg transform transition duration-300 ease-in-out ${open ? "-rotate-45 -translate-y-3.5" : ""}`} />
                </div>

                <div className="hidden md:flex">
                    <NavLink to="/contact">
                        CONTACT
                    </NavLink>
                    <NavLink to="/about">
                        ABOUT
                    </NavLink>
                </div>
            </div>
        </nav>
    )
}

Making navbar appear on all pages

Now we have our navbar made but we can't see it. We could go into each page function and add our components but that gets repetitive and there's a better way to do it.

In our root level file _app.js we have to import the Navbar component and render it in the root level component

`_app.js`

import Navbar from '../components/navbar'
import '../styles/globals.css'

function MyApp({ Component, pageProps }) {
  return <>
    <Navbar/>

    <Component {...pageProps} />
  </>
}

export default MyApp