Global CSS variables
I have multiple CSS files in my project
I don't want to set the variables in each CSS file, but I would like to access them from every file.
You can import another CSS file from a CSS using:
#import "path/variables.css";
MSDN Documentation
You just need to create a globals.css file in there somewhere. Add your CSS Variables. #import that file into the others where needed.
Related
I want to make a file with all the variables, but they are going to be default CSS variables.
Can they be exported to the main SCSS file (by #use)?
Don't ask why I prefer default ones over SCSS.
For example I am trying to import .navbar-nav from bootstrap's _navbar.scss and not the whole _navbar.scss file to my compiled css file. Is there a way to do it?
Sorry if this was asked before.
You can try doing an extend:
.your-class{
#extend .navbar-nav;
}
However, this would only work if you had imported the _navbar.scss somewhere else or the bootstrap.scss.
Additional
// main.scss
#import ../wherever bootstrap file is/_navbar.scss;
#import _custom.scss;
// _custom.scss
.your-class{
#extend .navbar-nav;
}
One of the way to import .scss in javascript is
import { navbar-nav } from '_navbar.scss'
When using in your component you can do.
<div className={navbar-nav} />
if you want to import it in your .scss file then you can do.
#import '_navbar.scss'
.class {
#extend .navbar-nav
}
As you are learning Sass here are some explanations which may help:
Better wording helps ...
At first some wording to get a correct understandable communication here and anywhere else you are talking about coding:
SASS don't minify a given CSS, it writes the CSS. Minify means the process that a given CSS code is compressed by a postprocessor to a shorter way to write it, - i.e. comments and spaces will be removed ... But yes: as SASS writes CSS it is able to write code in a minified format.
What you mean is to 'reduce code' or 'avoid not needed code' as you only try to import, use and write! the only needed parts of a given module which is a good practice.
.navbar is a CSS class. SASS don't load CSS classes, it writes CSS classes. It doesn't matter if you 'write the code on your own to a SCSS file' or 'get the code from a framework/module' ... SASS writes the however prepared CSS classes to your CSS file.
What you mean is the SASS includes/imports files with code from a framework/module to write that code/classes to css. So yes: maybe you can say you 'load' that module/scss-file ... but you don't load as css class. (This is as important as 'classes' in coding allways means a special construct of excutable code which does something in your programm. CSS classes don't execute anything, in SASS they are content you want to write/output to css.)
Please: these wordings are important to understand each other and to understand the mechanic of the process how SASS works is going on as well.
Reducing code by importing only selected file is good practice
So, I am not sure if I did understand your question right:
No. You are not able to include/import/load a part of the code of a single scss-file only. If you do #import 'somefile.scss' you always get the whole code of the whole file.
Yes. you are able to include/import/load parts of a given framework/module as you are able to load only the special FILES(!) of a framework/module you need for your project.
Yes. That is a really good practice.
As you mentioned Bootstrap indeed is developed and allows you to do that. But head up. If you import i.e. the part navbar.scss (or other selected elements) it only works if you also load the other files navbar.scss depends on. That are almost variables, functions, mixins and sometimes needed JS components to this element as well. Please note, that importing the files the elements are based on (i.e. vars, functions, mixins) has to be done BEFORE you load the element (i.e. like navbars, grid,...) itself.
A way to organize your project
Yes. A good way to organize your project is to have a single(!!!) file which brings all the code together you write in other partial files yourself or which you import from other framework/modules.
In case of Bootstrap this can be (simplified example):
// ###> file: your 'custom.scss'
// Note: file is without leading underscore
// as this files GENERATES/WRITE the css to custom.css
// Files with underscore as _partial-footer-styling.scss
// are not compiled to write css on their own
// that files are only compiled to css when they are imported to files without underscore
#import 'path/your-own-vars';
// Note: technique importing files
// you don't need to write underscore and '.scss'
// Note: function of this file
// the file '_your-own-vars.scss' is to organize you needed vars special to your project
// it includes your own vars and bootstrap vars as well
// --> the Bootstrap vars in this file will overwrite the vars of Bootstrap which will be included next
#import 'bootstrap-path/functions';
#import 'bootstrap-path/variables';
#import 'bootstrap-path/mixins';
#import 'bootstrap-path/your-selected-component-1';
#import 'bootstrap-path/your-selected-component-2';
#import 'bootstrap-path/your-selected-component-3';
...
#import 'path/partial-your-own-additional-css-special-section';
#import 'path/partial-your-own-additional-css-footer-settings';
....
A detailed explanation how to include and use Bootstrap (partly if you like to do so) to your project is here: https://getbootstrap.com/docs/4.6/getting-started/theming/
I have a css file that imports many other css files. What will be sequence of css execution? Which css rules are applied first.? From imported files or the file itself?
They will be applied in the order you import them. Imported files first, then the file itself.
I have a global CSS file that contains all generic CSS.
I want to be able to extend all the classes present in this global CSS file in any of my SCSS files.
Right now it throws an error .xyz class does not exist and build fails. I tried importing this file but still build fails.
Adding !options next to class is one way for the build to pass but is there any other better way?
Bit more context for Vue users. I use VueCli3. I use <style lang="scss"> for writing SCSS and want to use extend here. Vue documentation suggesting adding prependData for adding variables. I imported the global CSS in a SCSS file and imported that file in the prependData but Vue build still fails.
It sounds like you want to globally include a CSS file with content that the SCSS blocks in each component can read. (Variables, style definitions, etc).
#extend works like a variable, meaning SCSS needs the definition style to be available as part of its compilation. So that means getting "SCSS Global Variables" working should solve your Extend problem too.
In that case, you need to tweak how Webpack deals with your components. You can do it manually as described here. Or my preference is to use a Vue Cli plugin called vue-cli-plugin-sass-resources-loader. Make sure that your component <style> section contains lang="SCSS" though I assume you're already doing that.
Using #import CSS file into SCSS file not possible to #extend any class.
But you can follow below steps for extends class from your pure css code.
Convert .css file into .scss.
import that global.scss file into another .scss file.
Then after you can use #extend for extend class in new file.
If your file have more then 1k line of code then it will get trouble for extend class.
What is the difference between importing styles in angular.json and importing in styles.css?
Importing in angular.json
Importing in styles.css
Hope to have explained my question well. Thanks in advance.
The styles array inside of the angular.json file is used to declare global styles for a project (styles.css being one).
If you import all of your other stylesheets into styles.css (and styles.css is specified in the styles array in angular.json), you'll end up with one global, composite stylesheet.
If you put all of your stylesheets into the angular.json styles array independently (rather than importing them into styles.css), you'll end up with multiple global stylesheets.
In angular.json
The styles.css file allows users to add global styles and supports CSS imports.
You can add more global styles via the styles option inside your project's build target options in angular.json. These will be loaded exactly as if you had added them in a <link> tag inside index.html.
Importing css files in styles.css enable you divide your css code into separate files for the sake of organize code
for more information about global styles, follow this link