The responsive styling/css is loaded noticeably late (after around 2 sec) after the plain html

[nash90]

When I run nicistore locally, the responsive styling/css is loaded noticeably late (after around 2 sec) after the plain html because of which the UX is effected.
However, nicistore.com does not have this lag.

I have no idea what is causing this locally. I would really appreciate if you could give me any idea regarding it.

I checked the network graph in the client side and it has many gaps between requests as you can see in the attached pic which increases the page load time overall too.

[andrecrt]

@nash90 that's because, in development, the app is fetching the assets (js and css) in runtime from the webpack server. In production (like nicistore.com) you serve the built bundles (check the build script)