firework effect with sass, from codepen with updated sass deprecations

fireworks.scss

// https://codepen.io/hmaw/pen/qBEMLxV
// sass fixes https://sass-lang.com/documentation/breaking-changes/color-units
// https://sass-lang.com/documentation/breaking-changes/slash-div

// // to use, add html like this:
//   <div class="fireworks">
//     <div class="beforeFireworks" v-if="showGameWonModal" />
//     <div class="afterFireworks" v-if="showGameWonModal" />

@use "sass:math";

$particles: 50;
$width: 500;
$height: 500;

// Create the explosion...
$box-shadow: ();
$box-shadow2: ();
@for $i from 0 through $particles {
  $box-shadow: $box-shadow,
    random($width) -
      math.div($width, 2) +
      px
      random($height) -
      math.div($height, 1.2) +
      px
      hsl(random(360deg), 100%, 50%);
  $box-shadow2: $box-shadow2, 0 0 #fff;
}
@mixin keyframes($animationName) {
  @-webkit-keyframes #{$animationName} {
    @content;
  }

  @-moz-keyframes #{$animationName} {
    @content;
  }

  @-o-keyframes #{$animationName} {
    @content;
  }

  @-ms-keyframes #{$animationName} {
    @content;
  }

  @keyframes #{$animationName} {
    @content;
  }
}

@mixin animation-delay($settings) {
  -moz-animation-delay: $settings;
  -webkit-animation-delay: $settings;
  -o-animation-delay: $settings;
  -ms-animation-delay: $settings;
  animation-delay: $settings;
}

@mixin animation-duration($settings) {
  -moz-animation-duration: $settings;
  -webkit-animation-duration: $settings;
  -o-animation-duration: $settings;
  -ms-animation-duration: $settings;
  animation-duration: $settings;
}

@mixin animation($settings) {
  -moz-animation: $settings;
  -webkit-animation: $settings;
  -o-animation: $settings;
  -ms-animation: $settings;
  animation: $settings;
}

@mixin transform($settings) {
  transform: $settings;
  -moz-transform: $settings;
  -webkit-transform: $settings;
  -o-transform: $settings;
  -ms-transform: $settings;
}

.fireworks > .beforeFireworks,
.fireworks > .afterFireworks {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  box-shadow: $box-shadow2;
  @include animation(
    (
      1s bang ease-out infinite backwards,
      1s gravity ease-in infinite backwards,
      5s position linear infinite backwards
    )
  );
}

.fireworks > .afterFireworks {
  @include animation-delay((1.25s, 1.25s, 1.25s));
  @include animation-duration((1.25s, 1.25s, 6.25s));
}

@include keyframes(bang) {
  to {
    box-shadow: $box-shadow;
  }
}

@include keyframes(gravity) {
  to {
    @include transform(translateY(200px));
    opacity: 0;
  }
}

@include keyframes(position) {
  0%,
  19.9% {
    margin-top: 10%;
    margin-left: 40%;
  }
  20%,
  39.9% {
    margin-top: 40%;
    margin-left: 30%;
  }
  40%,
  59.9% {
    margin-top: 20%;
    margin-left: 70%;
  }
  60%,
  79.9% {
    margin-top: 30%;
    margin-left: 20%;
  }
  80%,
  99.9% {
    margin-top: 30%;
    margin-left: 80%;
  }
}