Hi @shanicunn and welcome to our community!
Not sure what is going on there, but it seems like a CSS problem potentially? I can see we are loading stuff - both the network requests work, and if I click around with devtools open, I can see your h1, for instance:
why that might be different locally, I’m not sure, but a good workflow would be to build locally the way you do, and then the way we do (see GitHub - netlify/build-image: This is the build image used for running automated builds for how to simulate our build environment locally), and see what is different in the build output. At a guess, you don’t sync your netlify tool versions to match your local - this article has more details on that: [Support Guide] Debugging Netlify site builds