Issues with CSS Styling not being applied properly on mobile devices in a React App deployed on Heroku

The Dilemma

My React app is deployed on Heroku using create-react-app for bundling. The backend is a Node.js written in Typescript with node version 10.15.3.

Locally, when I run the site using npm start, everything works perfectly. However, when I view the site on my mobile device, it appears different.

Despite reaching out to Heroku support for assistance, the issue remains unresolved. It seems that similar problems online pertain to Ruby users, not React developers like myself.

The build folder contains all the necessary files, and my index.js file looks like this:

(code snippet provided)

Also, here is the folder structure:

References:

Answer №1

It slipped my mind to include

<link href="https://fonts.googleapis.com/css?family=Poppins&display=swap" rel="stylesheet">
in the <head> section of my index.html document.

Surprisingly, the font still loaded properly on my local machine...perhaps because I already had the font installed? It's a mystery, but it worked out in the end.

This issue wasn't related to CSS failing to load or being properly served.

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