Відповідь:$unit: 1.75vmin;

//

$bg-1: darken(#181a19, 6);

$bg-2: darken($bg-1, 1);

$green-1: #546b5a;

$green-2: #344036;

$green-3: #242d2a;

$green-4: #191d20;

$green-5: darken(#111419, 3);

$white-1: #dfddd6;

$white-2: darken($white-1, 10);

$white-3: darken($white-2, 5);

$light-1: #ebe1b0;

$light-2: #84956c;

$light-3: #439483;

$neon: #abf1f1;

$orange: #ff9770;

$yellow: #e8fe84;

$gray-1: #b0b0b0;

$gray-2: darken($gray-1, 10);

$gray-3: darken($gray-2, 5);

$blue-1: #1896de;

$blue-2: #104d90;

$red-1: #e02e24;

$red-2: #70261d;

$red-3: #3e2823;

/***********************/

@mixin cylinder($base, $sides, $degree, $pi, $width, $color) {

display: flex;

justify-content: center;

align-items: center;

position: absolute;

&__side {

 position: absolute;

 height: (2 * $pi * ($base / 2)) / $sides;

 width: $width;

 background-color: darken($color, 15);

 @for $var from 1 to ($sides + 1) {

  &:nth-of-type(#{$var}) {

   transform: rotateX($var * $degree / $sides) translateZ($base / 2);

  }

 }

 @for $var from 1 to 20 {

  &:nth-of-type(#{$var}) {

   background-color: darken($color, $var * 1);

  }

 }

 @for $var from 1 to 20 {

  &:nth-last-of-type(#{$var}) {

   background-color: darken($color, $var * 1);

  }

 }

}

&__top,

&__bottom {

 position: absolute;

 width: $base;

 height: $base;

 border-radius: 50%;

 transform: rotateY(90deg) translateZ($width / 2);

}

&__bottom {

 transform: rotateY(90deg) translateZ($width / -2);

}

}

@mixin cube($width, $height, $depth) {

&__front {

 @include cube-front($width, $height, $depth);

}

&__back {

 @include cube-back($width, $height, $depth);

}

&__right {

 @include cube-right($width, $height, $depth);

}

&__left {