6. layout using TailwindCSS

Today we'll define the minimal layout for our blog.

We'll use Tailwind utility-first CSS framework and PostCSS for this.

So lets quickly define the steps we'll take for today's implementation:

  1. Install PostCSS and configure it with GatsbyJs
  2. Install Tailwind and configure it with PostCSS
  3. Add some CSS
  4. Define our blog's minimal layout

Lets get started

1. Install PostCSS and configure it with GatsbyJs

Install PostCSS plugin for GatsbyJs as below

npm install gatsby-plugin-postcss

Now tell GatsbyJs about this plugin by adding its entry in plugin array in gatsby-config.js file

plugins: [
    ...
    `gatsby-plugin-postcss`
    ...],

2. Install Tailwind and configure it with PostCSS

Install Tailwind using below command

npm install tailwindcss

Lets inform PostCSS about Tailwind by creating a new file postcss.config.js and add below content to it.

module.exports = () => ({
    plugins: [require("tailwindcss")],
  })

Next, configure Tailwind by creating the file tailwind.config.js in project root with following content:

module.exports = {
  corePlugins: {
    preflight: false,
  },
  purge: ["./src/**/*.js", "./src/**/*.jsx", "./src/**/*.ts", "./src/**/*.tsx"],
  theme: {},
  variants: {},
  plugins: [],
};

Notice, I am disabling Tailwind's core plugin preflight
Read more about it here

3. Add some CSS

Create a new file and import your Tailwind directives

file: src/css/index.css

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

Apply these additional styles to the browser

file: gatsby-browser.js

import "./src/css/index.css"

Finally! lets use PurgeCSS directly from Tailwind config to remove unused CSS classed. Create a new file tailwind.config.js and add below content to it.

file: tailwind.config.js

module.exports = {
  purge: ["./src/**/*.js", "./src/**/*.jsx", "./src/**/*.ts", "./src/**/*.tsx"],
  theme: {},
  variants: {},
  plugins: [],
}

4. Define our blog's minimal layout

Time to define the blog's minimal layout.
Lets add a new react component Layout.js under src/components with following contents:

import React from "react";
import PropTypes from "prop-types";

function Layout({ children }) {
    return (
      <div className="flex flex-col min-h-screen font-sans text-gray-900">
  
        <main className="flex-1 w-full max-w-4xl px-4 py-8 mx-auto md:px-8 md:py-16 bg-gray-100">
          {children}
        </main>
      </div>
    );
  }
  
  Layout.propTypes = {
    children: PropTypes.node.isRequired,
  };
  
  export default Layout;

Next, utilise the above created layout in index.js as below:

I have added extra html for greetings!

return (
    <>
        <Layout>
        <h1>Hi! I am RD 👋</h1>

        <p>I am building this blog using GatsbyJs fueled by Markdown files.</p>
        <p>
            If you wish to follow along the journey of building this blog step by step.
        </p>
        <p>
        I am documenting every step here 👉 <Link to="/building-a-markdown-blog">Building a Markdown Blog</Link>
        </p>

        <hr/>
        <h2>
        Recent Posts!
        </h2>
        {data.allMarkdownRemark.edges.map((post) => {
            const {
            title,
            description,
            slug,
            author,
            date_modified,
            } = post.node.frontmatter;
            const excerpt = post.node.excerpt;
            return (
            <>
                <p>{date_modified}</p>
                <Link to={slug}>{title}</Link>
                <p>{description}</p>
                <br />
            </>
            );
        })}
        </Layout>
    </>
);    

Also use that layout component in blogPostTemplate.js as below:

return (
    <Layout>
        <p>{frontmatter.date_modified}</p>
        <h1>{frontmatter.title}</h1>
        <div dangerouslySetInnerHTML={{ __html: html }} />
    </Layout>
);

This GitHub commit represents what we've done in this post 🤩

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