Styling not loading correctly on build but correctly on Dev

[aabdelw1]

Description

So I am in the finally stages of my project and as I am deploying on Netlify, I find an issue that didn't occur to me before where all my styles get completely wiped out on first reload. After you navigate to another page it disappears but if you do a hard refresh (command + shift + r) it reappears. I have scowered the docs, trying every possible solution including adding those additional plugins such as "gatsby-plugin-styled-components" but still nothing. The link to my website is below along with its repo:

Steps to reproduce

Here is my website: https://ammarnasr.dev/

When you navigate to it, run a hard refresh (command + shift + r) and you should see text overlapping an image:

If you'd like to replicate , here is my github repo: https://github.com/aabdelw1/personal
It works fine on develop, so run a "gatsby build" then "gatsby serve" to see if locally

Expected result

Actual result

Environment

System: OS: macOS 11.3.1 CPU: (8) x64 Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz Shell: 5.8 - /bin/zsh Binaries: Node: 12.16.1 - /usr/local/bin/node Yarn: 1.3.2 - /usr/local/bin/yarn npm: 6.13.4 - /usr/local/bin/npm Languages: Python: 3.8.3 - /usr/local/anaconda3/bin/python Browsers: Chrome: 91.0.4472.77 Firefox: 89.0 Safari: 14.1 npmPackages: gatsby: ^2.31.1 => 2.32.13 gatsby-cli: ^2.18.0 => 2.18.0 gatsby-image: ^2.2.34 => 2.8.0 gatsby-plugin-google-analytics: ^2.1.35 => 2.8.0 gatsby-plugin-manifest: ^2.2.31 => 2.9.1 gatsby-plugin-netlify: ^2.1.30 => 2.8.0 gatsby-plugin-offline: ^3.0.27 => 3.7.1 gatsby-plugin-postcss: ^2.3.6 => 2.3.13 gatsby-plugin-react-helmet: ^3.1.16 => 3.7.0 gatsby-plugin-react-svg: ^2.1.2 => 2.1.2 gatsby-plugin-sass: ^2.1.26 => 2.8.0 gatsby-plugin-scroll-reveal: 0.0.7 => 0.0.7 gatsby-plugin-sharp: ^2.3.5 => 2.11.2 gatsby-plugin-styled-components: ^3.10.0 => 3.10.0 gatsby-source-filesystem: ^2.1.40 => 2.8.1 gatsby-transformer-sharp: ^2.3.7 => 2.9.0 npmGlobalPackages: gatsby-cli: 3.4.1

[KyleAMathews]

Could you try enabling the DEV_SSR flag? That should help you debug the issue #28138

[aabdelw1]

I attempted this and still got nothing.