Sass·Sass from variables to a design system

Mixins

Reuse declarations with mixins and @include.

Intermediate 13 min read Lesson 5 of 300 Challenge included

What you will be able to do

Declare with @mixin name($args).
Include with @include name(args).
Use defaults for optional arguments.
Keep mixins focused on one pattern.

In plain English

A mixin is a reusable block of declarations with optional arguments. Use it for patterns such as focus rings, truncation or responsive breakpoints. Do not turn every rule into a mixin.

mixins.scssSCSS

@mixin focus-ring($color: #2f74c0) {
  outline: 2px solid $color;
  outline-offset: 2px;
}

.button {
  &:focus-visible { @include focus-ring; }
}

Your turn

Declare a mixin

Medium

Declare a mixin named truncate that hides overflow and adds an ellipsis.

SCSS · starter

@mixin

Check your understanding before moving on.

Knowledge checkQuestion 1

Which directive applies a mixin?

Select an answer to continue

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Lesson 5 of 300 · 0% of course