Css Visual Studio Code

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Visual Studio Code has built-in support for editing style sheets in CSS .css, Sass .scss and Less .less. This support includes:

IntelliSense

We have support for selectors, properties and values. Use kb(editor.action.triggerSuggest) to get a list of context specific options.

Emmet snippets

Press kb(editor.emmet.action.expandAbbreviation) to expand the current abbreviation. John deere fs19.

Tip: See the CSS section of the Emmet cheat sheet for valid abbreviations.

We also support User Defined Snippets.

Syntax coloring & Color preview

As you type we provide syntax highlighting as well as in context preview of colors.

Css Visual Studio Code

Syntax Verification & Linting

We support CSS version <= 2.1, Scss version <= 3.2 and Less version <= 1.7.

Goto symbol in file

Simply press kb(workbench.action.gotoSymbol).

Hovers

Hovering over a selector or property will provide an HTML snippet that is matched by the CSS rule.

Goto Declaration and Find References

This is supported for keyframes and variables in the same file.

Note: Cross file references ('imports') are not resolved.

Transpiling Sass and Less into CSS

VS Code can integrate with Sass and Less transpilers through our integrated task runner. We can use this to transpile .scss or .less files into .css files. Let's walk through transpiling a simple Sass/Less file.

Step 1: Install a Sass or Less transpiler

For this walkthrough, let's use either the node-sass or less Node.js module.

Step 2: Create a simple Sass or Less file

Open VS Code on an empty folder and create a styles.scss or styles.less file. Place the following code in that file:

For the Less version of the above file, just change $padding to @@padding.

Visual Studio Code Css Intellisense

Note: This is a very simple example, which is why the code is almost identical between both file types. In more advanced scenarios, the syntaxes and constructs will be much different.

Step 3: Create tasks.json

The next step is to set up the task configuration. To do this open the Command Palette with kb(workbench.action.showCommands) and type in Configure Task Runner, press kbstyle(Enter) to select it.

This will create a sample tasks.json file in the .vscode folder. The initial file has a large number of examples within it.

Tip: While the sample is there to help with common configuration settings, IntelliSense is available for the tasks.json file as well to help you along. Use kb(editor.action.triggerSuggest) to see the available settings.

The first example shows how to use configure tasks for TypeScript compilation. We will simply modify that configuration for transpiling Less/Sass instead:

Under the covers we interpret node-sass or lessc as an external task runner exposing exactly one task: the transpiling of Sass/Less files into CSS files. The command we run is node-sass styles.scss > styles.css or lessc styles.less > styles.css.

Step 4: Run the Build Task

As this is the only task in the file you can execute it by simply pressing kb(workbench.action.tasks.build) (Run Build Task). At this point you will see an additional file show up in the file list style.css.

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The sample Sass/Less file did not have any compile problems, so by running the task all that happened was a corresponding styles.css file was created.

Automating Sass/Less compilation

Let's take things a little further and automate Sass/Less compilation with VS Code. We can do so with the same task runner integration as before, but with a few modifications.

Step 1: Install Gulp and some plug-ins

We will use Gulp to create a task that will automate Sass/Less compilation. We will also use the gulp-sass plug-in to make things a little easier. The Less plug-in is gulp-less.

Note: gulp-sass and gulp-less are Gulp plug-ins for the node-sass and lessc modules we were using before. There are many other Gulp Markdown plug-ins you can use, as well as plug-ins for Grunt.

Step 2: Create a simple Gulp task

Open VS Code on the same folder from before (contains styles.scss/styles.less and tasks.json under the .vscode folder), and create gulpfile.js at the root. Place the following code in that file:

What is happening here?1. We are watching for changes to any Sass/Less file at the root of our workspace, i.e. the current folder open in VS Code.2. We take the set of Sass/Less files that have changed, and run them through our respective compiler, i.e. gulp-sass, gulp-less.3. We now have a set of CSS files, each named respectively after their original Sass/Less file. We then put these files in the same directory.

Step 3: Modify the configuration in tasks.json for watching

To complete the tasks integration with VS Code, we will need to modify the task configuration from before, to set a watch on the default Gulp task we just created. Your tasks configuration should now look like this:

Step 4: Run the Build Task

Again, as this is the only task in the file you can execute it by simply pressing kb(workbench.action.tasks.build) (Run Build Task). But this time, we've set a watch so the status bar should indicate that on the left-hand side.

At this point, if you create and/or modify other Less/Sass files, you will see the respective CSS files generated and/or changes reflected on save. You can also enable Auto Save to make things even more streamlined.

If you want to stop the watch, you can press kb(workbench.action.tasks.build) again and click Terminate Running Task in the message box. Or you can use the Command Palette with kb(workbench.action.showCommands) and find the terminate command there.

Customizing CSS, Sass and Less Settings

You can configure the following lint warnings as User or Workspace Settings.

Tip: Head over to this topic to get an overview of User and Workspace Settings.

Html

To configure an option for CSS, use css.lint. as the prefix to the id; for Sass and Less, use less.lint. and sass.lint..

Format css visual studio code

Set a setting to warning or error if you want to enable lint checking, use ignore to disable it. Lint checks are performed as you type.

IdDescriptionDefault
compatibleVendorPrefixesWhen using a property with a vendor-specific prefix (for example -webkit-transition), make sure to also include all other vendor-specific properties eg. -moz-transition, -ms-transition and -o-transitionignore
vendorPrefixWhen using a property with a vendor-specific prefix for example -webkit-transition, make sure to also include the standard property if it exists eg. transitionwarning
duplicatePropertiesWarn about duplicate properties in the same rulesetignore
emptyRulesWarn about empty rulesetswarning
importStatementWarn about using an import statement as import statements are loaded sequentially which has a negative impact on web page performanceignore
boxModelDo not use width or height when using padding or borderignore
universalSelectorWarn when using the universal selector * as it is known to be slow and should be avoidedignore
zeroUnitsWarn when having zero with a unit e.g. 0em as zero does not need a unit.ignore
fontFacePropertiesWarn when using @@font-face rule without defining a src and font-family propertywarning
hexColorLengthWarn when using hex numbers that don't consist of three or six hex numberserror
argumentsInColorFunctionWarn when an invalid number of parameters in color functions e.g. rgberror
unknownPropertiesWarn when using an unknown propertywarning
ieHackWarn when using an IE hack *propertyName or _propertyNameignore
unknownVendorSpecificPropertiesWarn when using an unknown vendor-specific propertyignore
propertyIgnoredDueToDisplayWarn when using a property that is ignored due to the display. For example with display: inline, the width, height, margin-top, margin-bottom, and float properties have no effect.warning
importantWarn when using !important as it is an indication that the specificity of the entire CSS has gotten out of control and needs to be refactored.ignore
floatWarn when using float as floats lead to fragile CSS that is easy to break if one aspect of the layout changes.ignore
idSelectorWarn when using selectors for an id #id as selectors should not contain IDs because these rules are too tightly coupled with the HTML.ignore
Css Visual Studio Code

Next Steps

Read on to find out about:

  • Configure Tasks - Dig into Tasks to help you transpile your Sass and Less to CSS.
  • Editing Evolved - Find out about the rich set of features the editor offers for languages such as CSS.
  • HTML - CSS is just the start, HTML is also very well supported in VS Code.

Common Questions

Q: Do you provide a color selector?

A: No, this is currently not supported.

Q: Do you support the indentation based Sass syntax (.sass) ?

A: No, this is currently not supported.

How To Use Visual Studio Code

Get started with web development by learning how to use HTML, CSS, and JavaScript to build a website, use developer tools in the browser to check your work.

Learning objectives

In this module you will:

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  • Create the files for a website
  • Write HTML, CSS, and JavaScript code

Prerequisites

Prettify Css Visual Studio Code

  • Familiarity with one or more programming languages and a markup language such as HTML
  • A computer that's running one of the following:
    • Windows: Windows 7, 8, 10
    • Mac: macOS 10.9 or later
    • Linux: Ubuntu, Debian, Red Hat, Fedora, or SUSE