This is another feature that we mentioned in the Eliminate Render Blocking Requests RFC (#18730)
Inlining of critical CSS is turned off by default. To opt-in this feature set `inlineCritical` to `true`.
Example:
```json
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": {
"styles": {
"minify": true,
"inlineCritical": true,
}
},
```
To learn more about critical CSS see;
https://web.dev/defer-non-critical-csshttps://web.dev/extract-critical-css/
In a future version of the Angular CLI `inlineCritical` will be enabled by default.
Closes: #17966Closes: #11395Closes: #19445
BREAKING CHANGE:
Deprecated `rebaseRootRelativeCssUrls` browser builder option has been removed without replacement. This option was used to change root relative URLs in stylesheets to include base HREF and deploy URL and was used only for compatibility and transition as this behavior is non-standard.
With this change we remove webpack dev-server logic to a seperate file. We also use the webpack-dev-server API to add live-reload and hmr entry-points and settings.
