Create Reusable CSS with Mixins4

Tell us what’s happening:

Passing all green ticks except the first one. What gives?

Your code so far

<style type='text/sass'>
  @mixin border-radius ($radius) {
  #awesome {
    width: 150px;
    height: 150px;
    background-color: green;
    @include border-radius(15px);

<div id="awesome"></div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36.

Link to the challenge:

The test is a little too picky. It does not like the space between border-radius and ($radius)