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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

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!
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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

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HTML 

              
                <div class="soldier"></div>
!

CSS 

              
                $p : 8px;
$t: transparent;
$c1: #eefff8;
$c2: #27193d;
$c3: #c0cacd;
$c4: #888899;
$c5: #a0a4af;
$c6: #6b657e;

@mixin keyframes($name) {
  @-o-keyframes #{$name} { @content };
  @-moz-keyframes #{$name} { @content };
  @-webkit-keyframes #{$name} { @content }; 
  @keyframes #{$name} { @content };
}
@mixin animation($prop...) {
  -o-animation: $prop;
  -moz-animation: $prop;
  -ms-animation: $prop;
  -webkit-animation: $prop;
  animation: $prop;
}

body{
   @include animation(bg 10s linear infinite);
   overflow:hidden;
}

.soldier{
   position: absolute;
   bottom:0;
   right:-10vw;
   width:$p * 12;
   height: $p * 30;
}


.soldier:nth-child(1){
   @include animation(go 10s linear infinite);
}

.soldier:nth-child(2){
   @include animation(go 10s 1s linear infinite);
}

.soldier:nth-child(3){
   @include animation(go 10s 2s linear infinite);
}

.soldier:nth-child(4){
   @include animation(go 10s 3s linear infinite);
}

@media(max-width:480px){
   .soldier{
      display: none;
   }
   .soldier:nth-child(1){
      display:block;
   }
}

@mixin anim1() {
  box-shadow: 
      0 0 0px $t,
      $p*4 0 0px $c1,
      $p*5 0 0px $c1,
      $p*6 0 0px $c1,
      $p*7 0 0px $c1,
      $p*8 0 0px $c1,
      $p*3 $p 0px $c1,
      $p*4 $p 0px $c1,
      $p*5 $p 0px $c1,
      $p*6 $p 0px $c1,
      $p*7 $p 0px $c1,
      $p*8 $p 0px $c1,
      $p*9 $p 0px $c1,
      
      $p*3 $p*2 0px $c1,
      $p*4 $p*2 0px $c1,
      $p*5 $p*2 0px $c3,
      $p*6 $p*2 0px $c2,
      $p*7 $p*2 0px $c2,
      $p*8 $p*2 0px $c4,
      $p*9 $p*2 0px $c4,
      
      $p*3 $p*3 0px $c1,
      $p*4 $p*3 0px $c3,
      $p*5 $p*3 0px $c3,
      $p*6 $p*3 0px $c1,
      $p*7 $p*3 0px $c1,
      $p*8 $p*3 0px $c2,
      $p*9 $p*3 0px $c2,
      $p*10 $p*3 0px $c4,
      
      $p*2 $p*4 0px $c3,
      $p*3 $p*4 0px $c1,
      $p*4 $p*4 0px $c3,
      $p*5 $p*4 0px $c2,
      $p*6 $p*4 0px $c1,
      $p*7 $p*4 0px $c1,
      $p*8 $p*4 0px $c1,
      $p*9 $p*4 0px $c1,
      $p*10 $p*4 0px $c3,
      
      $p*2 $p*5 0px $c1,
      $p*3 $p*5 0px $c1,
      $p*4 $p*5 0px $c1,
      $p*5 $p*5 0px $c1,
      $p*6 $p*5 0px $c1,
      $p*7 $p*5 0px $c1,
      $p*8 $p*5 0px $c1,
      $p*9 $p*5 0px $c2,
      $p*10 $p*5 0px $c2,
      
      $p*2 $p*6 0px $c3,
      $p*3 $p*6 0px $c1,
      $p*4 $p*6 0px $c1,
      $p*5 $p*6 0px $c1,
      $p*6 $p*6 0px $c3,
      $p*7 $p*6 0px $c3,
      $p*8 $p*6 0px $c3,
      $p*9 $p*6 0px $c3,
      $p*10 $p*6 0px $c4,
      
      $p*3 $p*7 0px $c3,
      $p*4 $p*7 0px $c3,
      $p*5 $p*7 0px $c3,
      $p*6 $p*7 0px $c3,
      $p*7 $p*7 0px $c3,
      $p*8 $p*7 0px $c3,
      $p*9 $p*7 0px $c1,
      $p*10 $p*7 0px $c1,
      
      $p*4 $p*8 0px $c2,
      $p*5 $p*8 0px $c2,
      $p*6 $p*8 0px $c2,
      $p*7 $p*8 0px $c2,
      $p*8 $p*8 0px $c4,
      
      $p*3 $p*9 0px $c3,
      $p*4 $p*9 0px $c1,
      $p*5 $p*9 0px $c1,
      $p*6 $p*9 0px $c4,
      $p*7 $p*9 0px $c3,
      $p*8 $p*9 0px $c1,
      $p*9 $p*9 0px $c3,
      
      $p*3 $p*10 0px $c1,
      $p*4 $p*10 0px $c1,
      $p*5 $p*10 0px $c1,
      $p*6 $p*10 0px $c4,
      $p*7 $p*10 0px $c3,
      $p*8 $p*10 0px $c3,
      $p*9 $p*10 0px $c1,
      
      $p*3 $p*11 0px $c1,
      $p*4 $p*11 0px $c1,
      $p*5 $p*11 0px $c1,
      $p*6 $p*11 0px $c4,
      $p*7 $p*11 0px $c3,
      $p*8 $p*11 0px $c4,
      $p*9 $p*11 0px $c3,
      
      $p*3 $p*12 0px $c1,
      $p*4 $p*12 0px $c1,
      $p*5 $p*12 0px $c1,
      $p*6 $p*12 0px $c4,
      $p*7 $p*12 0px $c3,
      $p*8 $p*12 0px $c3,
      $p*9 $p*12 0px $c1,
      
      $p*3 $p*13 0px $c3,
      $p*4 $p*13 0px $c1,
      $p*5 $p*13 0px $c2,
      $p*6 $p*13 0px $c4,
      $p*7 $p*13 0px $c3,
      $p*8 $p*13 0px $c3,
      $p*9 $p*13 0px $c1,
      
      $p*3 $p*14 0px $c2,
      $p*4 $p*14 0px $c2,
      $p*5 $p*14 0px $c2,
      $p*6 $p*14 0px $c4,
      $p*7 $p*14 0px $c3,
      $p*8 $p*14 0px $c1,
      $p*9 $p*14 0px $c1,
      
      $p*4 $p*15 0px $c1,
      $p*5 $p*15 0px $c3,
      $p*6 $p*15 0px $c4,
      $p*7 $p*15 0px $c3,
      $p*8 $p*15 0px $c3,
      $p*9 $p*15 0px $c3,
      $p*10 $p*15 0px $c3,
      
      $p*4 $p*16 0px $c1,
      $p*5 $p*16 0px $c1,
      $p*6 $p*16 0px $c3,
      $p*7 $p*16 0px $c4,
      $p*8 $p*16 0px $c4,
      $p*9 $p*16 0px $c4,
      $p*10 $p*16 0px $c4,
      $p*11 $p*16 0px $c3,
      
      $p*4 $p*17 0px $c2,
      $p*5 $p*17 0px $c1,
      $p*6 $p*17 0px $c3,
      $p*7 $p*17 0px $c4,
      $p*8 $p*17 0px $c1,
      $p*9 $p*17 0px $c4,
      $p*10 $p*17 0px $c4,
      $p*11 $p*17 0px $c4,
      
      $p*4 $p*18 0px $c2,
      $p*5 $p*18 0px $c1,
      $p*6 $p*18 0px $c3,
      $p*7 $p*18 0px $c4,
      $p*8 $p*18 0px $c1,
      $p*9 $p*18 0px $c4,
      
      $p*5 $p*19 0px $c2,
      $p*6 $p*19 0px $c2,
      $p*7 $p*19 0px $c1,
      $p*8 $p*19 0px $c1,
      $p*9 $p*19 0px $c4,
      
      $p*5 $p*20 0px $c4,
      $p*6 $p*20 0px $c3,
      $p*7 $p*20 0px $c1,
      $p*8 $p*20 0px $c1,
      $p*9 $p*20 0px $c4,
      
      $p*5 $p*21 0px $c4,
      $p*6 $p*21 0px $c3,
      $p*7 $p*21 0px $c1,
      $p*8 $p*21 0px $c1,
      $p*9 $p*21 0px $c4,
      
      $p*5 $p*22 0px $c2,
      $p*6 $p*22 0px $c3,
      $p*7 $p*22 0px $c1,
      $p*8 $p*22 0px $c2,
      $p*9 $p*22 0px $c2,
      
      $p*5 $p*23 0px $c2,
      $p*6 $p*23 0px $c3,
      $p*7 $p*23 0px $c2,
      $p*8 $p*23 0px $c2,
      
      $p*5 $p*24 0px $c4,
      $p*6 $p*24 0px $c2,
      $p*7 $p*24 0px $c1,
      $p*8 $p*24 0px $c1,
      
      $p*5 $p*25 0px $c4,
      $p*6 $p*25 0px $c2,
      $p*7 $p*25 0px $c3,
      $p*8 $p*25 0px $c1,
      
      $p*4 $p*26 0px $c4,
      $p*5 $p*26 0px $c4,
      $p*6 $p*26 0px $c4,
      $p*7 $p*26 0px $c3,
      $p*8 $p*26 0px $c1,
      
      $p*3 $p*27 0px $c2,
      $p*4 $p*27 0px $c4,
      $p*5 $p*27 0px $c3,
      $p*6 $p*27 0px $c5,
      $p*7 $p*27 0px $c4,
      $p*8 $p*27 0px $c1,
      
      $p*3 $p*28 0px $c2,
      $p*4 $p*28 0px $c4,
      $p*5 $p*28 0px $c4,
      $p*6 $p*28 0px $c5,
      $p*7 $p*28 0px $c4,
      $p*8 $p*28 0px $c3,
      $p*9 $p*28 0px $c1,
      
      $p*3 $p*29 0px $c4,
      $p*4 $p*29 0px $c2,
      $p*5 $p*29 0px $c2,
      $p*6 $p*29 0px $c3,
      $p*7 $p*29 0px $c2,
      $p*8 $p*29 0px $c3,
      $p*9 $p*29 0px $c1,
      $p*10 $p*29 0px $c1,
      $p*11 $p*29 0px $c4,
      $p*12 $p*29 0px $c4;
}

@mixin anim2() {
  box-shadow: 
      0 0 0px $t,
      $p*4 0 0px $c1,
      $p*5 0 0px $c1,
      $p*6 0 0px $c1,
      $p*7 0 0px $c1,
      $p*8 0 0px $c1,
     
      $p*3 $p 0px $c1,
      $p*4 $p 0px $c3,
      $p*5 $p 0px $c1,
      $p*6 $p 0px $c1,
      $p*7 $p 0px $c1,
      $p*8 $p 0px $c1,
      $p*9 $p 0px $c1,
      
      $p*3 $p*2 0px $c1,
      $p*4 $p*2 0px $c1,
      $p*5 $p*2 0px $c1,
      $p*6 $p*2 0px $c2,
      $p*7 $p*2 0px $c2,
      $p*8 $p*2 0px $c2,
      $p*9 $p*2 0px $c4,
      
      $p*3 $p*3 0px $c1,
      $p*4 $p*3 0px $c3,
      $p*5 $p*3 0px $c3,
      $p*6 $p*3 0px $c1,
      $p*7 $p*3 0px $c1,
      $p*8 $p*3 0px $c2,
      $p*9 $p*3 0px $c2,
      $p*10 $p*3 0px $c4,
      
      $p*2 $p*4 0px $c3,
      $p*3 $p*4 0px $c1,
      $p*4 $p*4 0px $c3,
      $p*5 $p*4 0px $c4,
      $p*6 $p*4 0px $c1,
      $p*7 $p*4 0px $c1,
      $p*8 $p*4 0px $c1,
      $p*9 $p*4 0px $c1,
      $p*10 $p*4 0px $c3,
      
      $p*2 $p*5 0px $c1,
      $p*3 $p*5 0px $c1,
      $p*4 $p*5 0px $c1,
      $p*5 $p*5 0px $c1,
      $p*6 $p*5 0px $c1,
      $p*7 $p*5 0px $c1,
      $p*8 $p*5 0px $c1,
      $p*9 $p*5 0px $c4,
      $p*10 $p*5 0px $c2,
      
      $p*2 $p*6 0px $c3,
      $p*3 $p*6 0px $c3,
      $p*4 $p*6 0px $c3,
      $p*5 $p*6 0px $c3,
      $p*6 $p*6 0px $c3,
      $p*7 $p*6 0px $c3,
      $p*8 $p*6 0px $c3,
      $p*9 $p*6 0px $c3,
      $p*10 $p*6 0px $c4,
      
      $p*3 $p*7 0px $c3,
      $p*4 $p*7 0px $c3,
      $p*5 $p*7 0px $c6,
      $p*6 $p*7 0px $c3,
      $p*7 $p*7 0px $c3,
      $p*8 $p*7 0px $c3,
      $p*9 $p*7 0px $c1,
      $p*10 $p*7 0px $c1,
      
      $p*4 $p*8 0px $c6,
      $p*5 $p*8 0px $c2,
      $p*6 $p*8 0px $c2,
      $p*7 $p*8 0px $c2,
      $p*8 $p*8 0px $c2,
      
      $p*3 $p*9 0px $c1,
      $p*4 $p*9 0px $c1,
      $p*5 $p*9 0px $c2,
      $p*6 $p*9 0px $c1,
      $p*7 $p*9 0px $c1,
      $p*8 $p*9 0px $c1,
      
      $p*3 $p*10 0px $c1,
      $p*4 $p*10 0px $c1,
      $p*5 $p*10 0px $c1,
      $p*6 $p*10 0px $c2,
      $p*7 $p*10 0px $c3,
      $p*8 $p*10 0px $c1,
      $p*9 $p*10 0px $c1,
      
      $p*3 $p*11 0px $c3,
      $p*4 $p*11 0px $c1,
      $p*5 $p*11 0px $c1,
      $p*6 $p*11 0px $c4,
      $p*7 $p*11 0px $c3,
      $p*8 $p*11 0px $c1,
      $p*9 $p*11 0px $c1,
      
      $p*3 $p*12 0px $c3,
      $p*4 $p*12 0px $c1,
      $p*5 $p*12 0px $c1,
      $p*6 $p*12 0px $c4,
      $p*7 $p*12 0px $c3,
      $p*8 $p*12 0px $c3,
      $p*9 $p*12 0px $c1,
      
      $p*3 $p*13 0px $c3,
      $p*4 $p*13 0px $c3,
      $p*5 $p*13 0px $c1,
      $p*6 $p*13 0px $c4,
      $p*7 $p*13 0px $c4,
      $p*8 $p*13 0px $c3,
      $p*9 $p*13 0px $c1,
      
      $p*4 $p*14 0px $c4,
      $p*5 $p*14 0px $c2,
      $p*6 $p*14 0px $c1,
      $p*7 $p*14 0px $c1,
      $p*8 $p*14 0px $c4,
      $p*9 $p*14 0px $c4,
      
      $p*4 $p*15 0px $c2,
      $p*5 $p*15 0px $c2,
      $p*6 $p*15 0px $c3,
      $p*7 $p*15 0px $c1,
      $p*8 $p*15 0px $c1,
      $p*9 $p*15 0px $c1,
      $p*10 $p*15 0px $c1,
      
      $p*5 $p*16 0px $c2,
      $p*6 $p*16 0px $c2,
      $p*7 $p*16 0px $c2,
      $p*8 $p*16 0px $c3,
      $p*9 $p*16 0px $c3,
      $p*10 $p*16 0px $c1,
      
      $p*4 $p*17 0px $c3,
      $p*5 $p*17 0px $c1,
      $p*6 $p*17 0px $c1,
      $p*7 $p*17 0px $c2,
      $p*8 $p*17 0px $c2,
      $p*9 $p*17 0px $c1,
      
      $p*4 $p*18 0px $c1,
      $p*5 $p*18 0px $c1,
      $p*6 $p*18 0px $c1,
      $p*7 $p*18 0px $c3,
      $p*8 $p*18 0px $c4,
      $p*9 $p*18 0px $c4,
      $p*10 $p*18 0px $c1,
      
      $p*4 $p*19 0px $c1,
      $p*5 $p*19 0px $c1,
      $p*6 $p*19 0px $c1,
      $p*7 $p*19 0px $c3,
      $p*8 $p*19 0px $c4,
      $p*9 $p*19 0px $c4,
      $p*10 $p*19 0px $c1,
      
      $p*4 $p*20 0px $c3,
      $p*5 $p*20 0px $c1,
      $p*6 $p*20 0px $c3,
      $p*7 $p*20 0px $c3,
      $p*8 $p*20 0px $c2,
      $p*9 $p*20 0px $c4,
      $p*10 $p*20 0px $c4,
      $p*11 $p*20 0px $c1,
      
      $p*4 $p*21 0px $c3,
      $p*5 $p*21 0px $c1,
      $p*6 $p*21 0px $c3,
      $p*9 $p*21 0px $c2,
      $p*10 $p*21 0px $c4,
      $p*11 $p*21 0px $c2,
      $p*12 $p*21 0px $c2,
      
      $p*5 $p*22 0px $c4,
      $p*6 $p*22 0px $c2,
      $p*10 $p*22 0px $c2,
      $p*11 $p*22 0px $c2,
      $p*12 $p*22 0px $c2,
      
      $p*4 $p*23 0px $c4,
      $p*5 $p*23 0px $c2,
      $p*6 $p*23 0px $c2,
      $p*10 $p*23 0px $c4,
      $p*11 $p*23 0px $c4,
      $p*12 $p*23 0px $c3,
      
      $p*4 $p*24 0px $c1,
      $p*5 $p*24 0px $c3,
      $p*6 $p*24 0px $c3,
      $p*9 $p*24 0px $c4,
      $p*10 $p*24 0px $c4,
      $p*11 $p*24 0px $c3,
      
      $p*4 $p*25 0px $c1,
      $p*5 $p*25 0px $c3,
      $p*8 $p*25 0px $c4,
      $p*9 $p*25 0px $c4,
      $p*10 $p*25 0px $c3,
      
      $p*4 $p*26 0px $c1,
      $p*5 $p*26 0px $c3,
      $p*8 $p*26 0px $c4,
      $p*9 $p*26 0px $c3,
      $p*10 $p*26 0px $c4,
      
      $p*4 $p*27 0px $c1,
      $p*5 $p*27 0px $c3,
      $p*8 $p*27 0px $c4,
      $p*9 $p*27 0px $c4,
      $p*10 $p*27 0px $c3,
      
      $p*4 $p*28 0px $c1,
      $p*5 $p*28 0px $c1,
      $p*6 $p*28 0px $c1,
      $p*9 $p*28 0px $c4,
      $p*10 $p*28 0px $c4,
      $p*11 $p*28 0px $c3,
      
      $p*4 $p*29 0px $c3,
      $p*5 $p*29 0px $c3,
      $p*6 $p*29 0px $c3,
      $p*7 $p*29 0px $c1,
      $p*8 $p*29 0px $c4,
      $p*9 $p*29 0px $c4,
      $p*10 $p*29 0px $c2,
      $p*11 $p*29 0px $c2,
      $p*12 $p*29 0px $c4,
      $p*13 $p*29 0px $c4;
}

@mixin anim3() {
  box-shadow: 
      0 0 0px $t,
      $p*3 0 0px $c1,
      $p*4 0 0px $c1,
      $p*5 0 0px $c1,
      $p*6 0 0px $c1,
      $p*7 0 0px $c1,
     
      $p*2 $p 0px $c1,
      $p*3 $p 0px $c3,
      $p*4 $p 0px $c1,
      $p*5 $p 0px $c1,
      $p*6 $p 0px $c1,
      $p*7 $p 0px $c1,
      $p*8 $p 0px $c1,
      
      $p*2 $p*2 0px $c1,
      $p*3 $p*2 0px $c1,
      $p*4 $p*2 0px $c1,
      $p*5 $p*2 0px $c2,
      $p*6 $p*2 0px $c2,
      $p*7 $p*2 0px $c2,
      $p*8 $p*2 0px $c4,
      
      $p*2 $p*3 0px $c1,
      $p*3 $p*3 0px $c3,
      $p*4 $p*3 0px $c3,
      $p*5 $p*3 0px $c1,
      $p*6 $p*3 0px $c1,
      $p*7 $p*3 0px $c2,
      $p*8 $p*3 0px $c2,
      $p*9 $p*3 0px $c4,
      
      $p*1 $p*4 0px $c3,
      $p*2 $p*4 0px $c1,
      $p*3 $p*4 0px $c3,
      $p*4 $p*4 0px $c4,
      $p*5 $p*4 0px $c1,
      $p*6 $p*4 0px $c1,
      $p*7 $p*4 0px $c1,
      $p*8 $p*4 0px $c1,
      $p*9 $p*4 0px $c3,
      
      $p*1 $p*5 0px $c1,
      $p*2 $p*5 0px $c1,
      $p*3 $p*5 0px $c1,
      $p*4 $p*5 0px $c1,
      $p*5 $p*5 0px $c1,
      $p*6 $p*5 0px $c1,
      $p*7 $p*5 0px $c1,
      $p*8 $p*5 0px $c4,
      $p*9 $p*5 0px $c2,
      
      $p*1 $p*6 0px $c1,
      $p*2 $p*6 0px $c3,
      $p*3 $p*6 0px $c3,
      $p*4 $p*6 0px $c3,
      $p*5 $p*6 0px $c3,
      $p*6 $p*6 0px $c3,
      $p*7 $p*6 0px $c3,
      $p*8 $p*6 0px $c3,
      $p*9 $p*6 0px $c4,
      
      $p*2 $p*7 0px $c1,
      $p*3 $p*7 0px $c3,
      $p*4 $p*7 0px $c6,
      $p*5 $p*7 0px $c3,
      $p*6 $p*7 0px $c3,
      $p*7 $p*7 0px $c3,
      $p*8 $p*7 0px $c1,
      $p*9 $p*7 0px $c1,
      
      $p*3 $p*8 0px $c6,
      $p*4 $p*8 0px $c2,
      $p*5 $p*8 0px $c2,
      $p*6 $p*8 0px $c2,
      $p*7 $p*8 0px $c2,
      
      $p*3 $p*9 0px $c3,
      $p*4 $p*9 0px $c1,
      $p*5 $p*9 0px $c2,
      $p*6 $p*9 0px $c1,
      $p*7 $p*9 0px $c1,
      $p*8 $p*9 0px $c1,
      
      $p*3 $p*10 0px $c1,
      $p*4 $p*10 0px $c1,
      $p*5 $p*10 0px $c1,
      $p*6 $p*10 0px $c4,
      $p*7 $p*10 0px $c3,
      $p*8 $p*10 0px $c1,
      $p*9 $p*10 0px $c3,
      
      $p*4 $p*11 0px $c1,
      $p*5 $p*11 0px $c1,
      $p*6 $p*11 0px $c4,
      $p*7 $p*11 0px $c3,
      $p*8 $p*11 0px $c3,
      $p*9 $p*11 0px $c1,
      
      $p*4 $p*12 0px $c1,
      $p*5 $p*12 0px $c1,
      $p*6 $p*12 0px $c4,
      $p*7 $p*12 0px $c3,
      $p*8 $p*12 0px $c4,
      $p*9 $p*12 0px $c4,
      $p*10 $p*12 0px $c1,
      $p*11 $p*12 0px $c1,     
      
      $p*4 $p*13 0px $c3,
      $p*5 $p*13 0px $c1,
      $p*6 $p*13 0px $c1,
      $p*7 $p*13 0px $c4,
      $p*8 $p*13 0px $c1,
      $p*9 $p*13 0px $c1,
      $p*10 $p*13 0px $c1,
      $p*11 $p*13 0px $c1,
      
      $p*4 $p*14 0px $c4,
      $p*5 $p*14 0px $c3,
      $p*6 $p*14 0px $c2,
      $p*7 $p*14 0px $c1,
      $p*8 $p*14 0px $c1,
      $p*9 $p*14 0px $c2,
      
      $p*4 $p*15 0px $c4,
      $p*5 $p*15 0px $c2,
      $p*6 $p*15 0px $c3,
      $p*7 $p*15 0px $c1,
      $p*8 $p*15 0px $c2,
      $p*9 $p*15 0px $c4,
      
      $p*5 $p*16 0px $c4,
      $p*6 $p*16 0px $c2,
      $p*7 $p*16 0px $c2,
      $p*8 $p*16 0px $c2,
      $p*9 $p*16 0px $c4,
      
      $p*4 $p*17 0px $c4,
      $p*5 $p*17 0px $c1,
      $p*6 $p*17 0px $c1,
      $p*7 $p*17 0px $c1,
      $p*8 $p*17 0px $c3,
      $p*9 $p*17 0px $c3,
      
      $p*4 $p*18 0px $c3,
      $p*5 $p*18 0px $c1,
      $p*6 $p*18 0px $c1,
      $p*7 $p*18 0px $c3,
      $p*8 $p*18 0px $c3,
      $p*9 $p*18 0px $c3,
      $p*10 $p*18 0px $c1,
      
      $p*4 $p*19 0px $c1,
      $p*5 $p*19 0px $c1,
      $p*6 $p*19 0px $c1,
      $p*8 $p*19 0px $c4,
      $p*9 $p*19 0px $c3,
      $p*10 $p*19 0px $c1,
      
      $p*4 $p*20 0px $c1,
      $p*5 $p*20 0px $c1,
      $p*6 $p*20 0px $c1,
      $p*8 $p*20 0px $c4,
      $p*9 $p*20 0px $c3,
      $p*10 $p*20 0px $c1,
     
     $p*4 $p*21 0px $c1,
      $p*5 $p*21 0px $c1,
      $p*6 $p*21 0px $c1,
      $p*8 $p*21 0px $c4,
      $p*9 $p*21 0px $c3,
      $p*10 $p*21 0px $c1,
      
      $p*4 $p*22 0px $c2,
      $p*5 $p*22 0px $c2,
      $p*6 $p*22 0px $c2,
      $p*8 $p*22 0px $c4,
      $p*9 $p*22 0px $c2,
      $p*10 $p*22 0px $c2,
      
      $p*4 $p*23 0px $c1,
      $p*5 $p*23 0px $c1,
      $p*6 $p*23 0px $c2,
      $p*8 $p*23 0px $c2,
      $p*9 $p*23 0px $c2,
      $p*10 $p*23 0px $c2,
      
      $p*4 $p*24 0px $c1,
      $p*5 $p*24 0px $c3,
      $p*6 $p*24 0px $c3,
      $p*8 $p*24 0px $c4,
      $p*9 $p*24 0px $c3,
      
      $p*3 $p*25 0px $c1,
      $p*4 $p*25 0px $c3,
      $p*5 $p*25 0px $c3,
      $p*8 $p*25 0px $c4,
      $p*9 $p*25 0px $c3,
      
      $p*2 $p*26 0px $c1,
      $p*3 $p*26 0px $c3,
      $p*4 $p*26 0px $c3,
      $p*8 $p*26 0px $c4,
      $p*9 $p*26 0px $c3,
      
      $p*1 $p*27 0px $c4,
      $p*2 $p*27 0px $c1,
      $p*3 $p*27 0px $c3,
      $p*8 $p*27 0px $c4,
      $p*9 $p*27 0px $c1,
      
      $p*2 $p*28 0px $c4,
      $p*3 $p*28 0px $c1,
      $p*8 $p*28 0px $c4,
      $p*9 $p*28 0px $c3,
      $p*10 $p*28 0px $c1,
      
      $p*1 $p*29 0px $c4,
      $p*2 $p*29 0px $c4,
      $p*3 $p*29 0px $c2,
      $p*4 $p*29 0px $c1,
      $p*5 $p*29 0px $c4,
      $p*6 $p*29 0px $c4,
      $p*8 $p*29 0px $c2,
      $p*9 $p*29 0px $c2,
      $p*10 $p*29 0px $c4,
      $p*11 $p*29 0px $c1,
      $p*12 $p*29 0px $c4;
}

.soldier:before{
   content:"";
   width:$p * 1.5;
   height:$p;
   position: absolute;
   top:0;
   left:0;
   @include animation(anim 1s ease infinite);
   @include anim3();
}

@include keyframes(anim){
   0%{
      @include anim1();
   }
   33%{
      @include anim2();
   }
   66%{
      @include anim3();
   }
   100%{
      @include anim1();
   }
}

@include keyframes(go){
   0%{
      right:-10vw;
   }
   100%{
      right:110vw;
   }
}

@include keyframes(bg){
   0%{
      background: hsla(190,60%,60%,0.5);
   }
   50%{
      background: hsla(0,0%,0%,1);
   }
   100%{
      background: hsla(190,60%,60%,0.5);
   }
}
!

JS
!
999px

Console