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I created a global style sheet using Sass and put it in the public/style/styles.scss. I only specify a background color.
In the index, I added a link to it: <link rel="stylesheet" href="style/styles.css">
The background color does not work on the body tag. Upon inspecting the body tag I can see that the background-color was applied but overruled by scaffolding.less:31
What I am doing wrong?
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Global CSS — The Way You're Used To Angular components can be styled via global CSS the same as any other element in your application. Simply drop a `<link>` element on your page (typically in index. html) and you're good to go! However, Angular additional gives developers more options for scoping your styles.
There are several ways to add styles to a component: By setting styles or styleUrls metadata. Inline in the template HTML. With CSS imports.
You can have both but you have to set your style extension to SASS or CSS only.
As of the beta.14 release of the CLI (which uses Angular 2.0 final), a global stylesheet can be linked inside angular-cli.json under the "styles" key. This is a reference to a file relative to the src/ directory, which is style.css by default.
Leveraging this method you could:
src/styles.css styles.css apps[0].styles property in angular-cli.json See also Global Styles in angular-cli's wiki.
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None of the above answers explains what is REALLY going on in Angular's CSS system or why you might be seeing cascading problems. You might consider moving all your CSS out of the Angular compiler and into your own external links.
In an Angular project, when you add styles paths directly into the "angular.json"(newer) or "angular-cli.json"(older) settings file, Angular grabs all those CSS files, compiles them into a JavaScript file, then spits them out as embedded styles in the head of your HTML file:
This angular.json setting:
"styles": [ "src/styles.css", ], Gets turned into HTML and added to a gigantic embedded <style> tag that JavaScript creates in the DOM of your browser:
<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>My Project</title> <style> .mystyle {background:blue;}/* everything in styles.css gets dumped in here! */ </style> <body> ... Bad CSS design! You can only see this if you go to a browser and use F12 and look at the actual DOM and CSS angular spits out in memory in your browser. If you use component styling, the same thing happens when those components get loaded into the DOM by Angular modules, etc. They get dumped into ANOTHER embedded style element under the first one.
I'm not 100% sure the Angular guys understood what they were doing adding embedded styles like this. Any CSS in your linked styles could be hidden with these embedded style systems Angular uses if they are inserted AFTER your linked styles.
One of the things I don't like about Angular is if you place CSS IMPORT tags inside your "styles.css" file (for example to bootstrap), the compiler also grabs those and spits those out into these embedded style tags, as well. Traditionally, importing one style sheet into another was used to control cascade order as imported sheets were inserted before other styles in the parents page. We use @import to hide styles that are not supported in very old browsers, and manage large libraries of styles by function this way. Because Angular ignores all that now and jumbles all this CSS together, you're left with a gigantic embedded inline style block in the head of your "index.html" file, and its very difficult to control cascading orders this way.
Angular's style system also doesn't support skinning of websites or themes using this inline system, nor global caching of linked styles between pages which would save bandwidth. And it doesn't matter WHERE you put your style sheets in your folder structure, as people above mention. If they are referenced in the angular.json, they all get compiled into these embedded style blobs at the head of your page in an order you cannot control.
For that reason, I recommend you REMOVE ALL STYLE REFERENCES FROM "ANGULAR.JSON"! Then add them back into your "index.html" manually as links like this:
<link href="styles/styles.css" rel="stylesheet" /> ...then changing your angular.json settings file by removing the styles entry in your styles array path list then pasting it back into your assets array list so Angular knows where to migrate your CSS folders and files in the dist folder, like so:
"assets": [ "src/styles", ], "styles": [ ], Your Angular application is now using just <link> or external CSS files for styles in your index.html file rather than <styles> or embedded CSS. You can still use this internal or "embedded" Angular-managed CSS system. I am not 100% against it. In rare cases, embedded CSS was great for supporting offline web pages. Angular has a nice system for controlling and manipulating CSS this way. But it is just not traditionally how CSS was used in most caching systems the past 20 years. Using "external" or <link> CSS, your main styles are now stored in the user's "native" browser cache for much longer periods of time, saving bandwidth and rendering/paint speed in the browser.
<link> CSS gives you back complete control of your websites styling, cross-browser fixes, skins, etc. Your front-end designers also have control over it and updates are independent of kooky polyfills, preprocessing, scripting dependencies, etc. You also now gain back full control of your cascade order, which is critical if you want full control over that.
Linking external styles also has huge caching advantages over Google Angular's broken CSS system, as the browser's naturally cache all this on page refreshes or revisits. We've been using CSS this way since the 1990's so Im baffled why Google went back to an old inline style system. Linked styles are just superior for managing and caching css. We also add versioning query strings to the end of linked CSS files (/mystyles.css?v=1.2) so you can force refreshes, etc. Again to do this, REMOVE all references to CSS in the angular.json file and manually add them in as links in the head of your index.html file.
I do think you can safely use the Angular's modular or component-based styling system as long as you understand that when you lazy load or preload Angular modules those embedded style elements do get pushed down from the server to the user on every new visit or refresh of the script block. Also understand that way modern browsers work today is not how older ones worked.....new browsers do not parse embedded styles after linked ones, but honor the order you inserted them into the head of your HTML page. In other words today, the order you put them in the page could be unpredictable in Angular when it finally delivers the HTML. Cascade order is today now heavily controlled by the HTML designer, not the W3C recommendations.
I think that's the main purpose of Angular's modular styling system....to take over control of CSS away from the designer and hope they don't notice. But to be honest, its unnecessary if you use external sheets and follow basic cascading rules.
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