My page does not load the styles correctly when accessing one of its links in Angular

I have this html page on angular:

<div class="main-page-container">
<sidebar-your-chef></sidebar-your-chef>
<div class="content">
<router-outlet></router-outlet>
</div>
</div>



When any of the app's routes are loaded, the styles at startup do not load and for a moment the sidebar is seen without the CSS styles applied. Why don't the styles load initially?

I don't have a global CSS template; instead, each component has its own CSS.

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