.my-css {
  display: block;
}

  .my-scss {
  @include my-mixin;
}

  <header>
  <h1>Headline</h1>
</header>

  import { polyfillLoader } from '@bolt/core-v3.x/polyfills';

  {% include "@bolt-components-code-snippet/code-snippet.twig" with {
  display: "block",
  lang: "html",
  content: "Some code snippet"
} only %}