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CSS Sass Basics (retired) Advanced Sass Concepts Advanced Mixin Arguments

My code compiles to "div .red" instead of "div.red" so the error is correct but I don't know how to fix it.

Bummer! The <div> with the class .red should have a red background. Did you use red as a parameter when including the rainbow mixin?

This is the last task in the last task of Sass Basics. My code works until this point.

Again, I need to eliminate the space between div and .red but do not know how.

Any help is appreciated.

<!DOCTYPE html>
  <title>Sass Basics - Code Challenge</title>
  <link rel="stylesheet" type="text/css" href="page-style.css">
  <link rel="stylesheet" type="text/css" href="style.css">
  <div class="box"></div>
  <div class="red"></div>
  <div class="orange"></div>
  <div class="yellow"></div>
  <div class="green"></div>
/* Write your SCSS code below. */
@mixin square ($size, $color: black ) {
  width: $size;
  height: $size;
  border: 1px solid $color;

@mixin rainbow ($colors...) {
  @each $color in $colors {
   .#{$color} {
        background: $color;

.box {
  @include square($color: red, $size: 10px);

 div { @include rainbow(red, orange, yellow, green); }

1 Answer

Gonras Karols
Gonras Karols
17,357 Points

You dont need to set a default value to $color when you declare the mixin. Your mixin should look like this -

@mixin square($size, $color) {
    height: $size;
  width: $size;
  border: 1px solid $color;