How To Upload Sty Files To Library Biib

Cascading style sheets (CSS)

Overview

Magento 2 incorporates Less, a CSS pre-processor that simplifies the direction of complex CSS files. To define styles of a Magento store, you tin employ both - CSS and Less stylesheets.

Magento awarding provides a built-in Less UI library, which you tin can optionally extend.

To customize storefront styles, you lot need to create a custom pattern theme. Then you can use one of the following approaches:

If your theme inherits from the Magento out-of-the-box Blank or Luma theme, you tin can override the default Less files. For case, to alter the values of the variables used in the default files.
Create your ain Less files using the built-in Less preprocessor.
Create your own CSS files, optionally having compiled them using tertiary-party CSS preprocessor.

Things to call up when working with styles

Make certain that you set your Magento application to the programmer or default manner.
If your fashion changes do non apply later refreshing the page, cleaning the static files cache might aid. Run across the Clean static files cache topic for instructions how to do this.

CSS merging, minification and performance

In that location are a couple options to help with CSS and site performance.

Merge CSS files to decrease the number of HTTP requests required to load the page.
Minification of CSS files reduces the file size existence sent. It does this by stripping white space within the file.
Use CSS critical path to eliminate render-blocking CSS resources.

To enable / disable these settings, go into Admin > Stores > Setting > Configuration > Advanced > Developer > CSS Settings.

Alter styles: walkthrough

Here is a elementary illustration of changing styles using the beginning approach: irresolute the color of the buttons of a certain class. In the Blank theme, the buttons of the .action.primary class, and then called primary buttons, are blue. The following image illustrates this:

The default view of a product page, with the orange Add to Cart button

ExampleCorp wants to alter the colour of the principal buttons to orange. To achieve this, they do the post-obit:

Create a new Orange theme, which inherits from the Blank theme.

In the Orange theme directory add the overriding app/pattern/frontend/ExampleCorp/orange/web/css/source/_theme.less file with the following code:

                //  Primary button @button-primary__color: @color-white; @button-primary__hover__color: @color-white; @button-primary__background: @color-orange-red1; @button-primary__hover__background: @color-orange-red4; @button-primary__border: 1px solid @colour-orangish-red2; @button-primary__hover__border: 1px solid @color-orange-red2;

ExampleCorp wants to change the color of the chief buttons to a custom color. In the orange theme directory add together the overriding app/pattern/frontend/ExampleCorp/orangish/web/css/source/_theme.less file with the post-obit code:

                          //  Primary button    @btn-color-text: #2e3138;    @btn-color-background: #d5d7dd;    @btn-colour-background-hover: #d9dbe0;    @push-primary__color: @btn-color-text;    @button-primary__hover__color: @btn-color-text;    @button-primary__background: @btn-color-background;    @button-primary__hover__background: @btn-color-background-hover;    @push button-primary__border: 1px solid @btn-color-background;

When ExampleCorp applies their theme, the primary buttons will look like on the following prototype:

The customized view of a product page, with the grey Add to Cart button

In this chapter

Other topics of this chapter depict the following:

Including CSS: how stylesheets are organized and included to exist used for store pages in the Magento awarding.
CSS Preprocessing: how stylesheets are preprocessed and compiled.
Magento UI Library: how to use the Magento styles library in your custom themes.
Using Custom Fonts: how to add custom fonts.
CSS critical path: how to employ CSS critical path.
Customizing styles illustration: how to change a theme's colour scheme using Magento UI library.

Source: https://devdocs.magento.com/guides/v2.4/frontend-dev-guide/css-topics/css-overview.html

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