style.scss

*,
*::after,
*::before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.error {
  background-color: #000000;
  height: 100vh;
  overflow: hidden;

  .world-border {
    width: 157px;
    height: 157px;
    border: 1px solid transparent;
    border-radius: 100px;

    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 96px;

    &:hover {
      border-color: $primary-color;
    }
  }

  .cosmonot {
    position: absolute;
    right: 30%;
    top: 30%;
    height: 122px;
    animation: cosmonot 60s forwards;

    img {
      height: 100%;
    }
  }

  .world {
    animation: world 30s linear infinite;
  }

  &-box {
    position: absolute;
    bottom: 40px;
    left: 25%;
    color: #e5e5e5;
    z-index: 9;

    &-title {
      font-size: 12px;
      letter-spacing: 4px;
      margin-top: 56px;
      margin-bottom: 18px;
    }
    &-desc {
      font-weight: 300;
      font-size: 18px;
      line-height: 24px;
      margin-bottom: 54px;
    }
    &-footer {
      display: flex;
      flex-direction: column;
      align-items: flex-start;

      img {
        height: 77px;
      }
    }
    &-link {
      color: currentColor;
      font-size: 18px;
      font-weight: 600;
      border-bottom: 2px solid $primary-color;
      padding-bottom: 14px;
    }
  }

  @keyframes cosmonot {
    from {
      transform: rotate(0) translate(0, 0) scale(1);
    }
    to {
      transform: rotate(360deg) translate(200px, -200px) scale(0.05);
    }
  }

  @keyframes world {
    from {
      transform: rotate(0);
    }
    to {
      transform: rotate(360deg);
    }
  }

  @function multiple-box-shadow($n) {
    $value: "#{random(2000)}px #{random(2000)}px #4f4f4f";
    @for $i from 2 through($n) {
      $value: "#{$value} , #{random(2000)}px #{random(2000)}px #4f4f4f";
    }

    @return unquote($value);
  }

  $shadows-small: multiple-box-shadow(700);
  $shadows-medium: multiple-box-shadow(200);
  $shadows-big: multiple-box-shadow(100);

  #stars {
    width: 2px;
    height: 2px;
    background: transparent;
    box-shadow: $shadows-small;
    animation: animStar 50s linear infinite;

    &:after {
      content: " ";
      position: absolute;
      top: 2000px;
      width: 1px;
      height: 1px;
      background: transparent;
      box-shadow: $shadows-small;
    }
  }

  #stars2 {
    width: 3px;
    height: 3px;
    background: transparent;
    box-shadow: $shadows-medium;
    animation: animStar 100s linear infinite;

    &:after {
      content: " ";
      position: absolute;
      top: 2000px;
      // color: #4f4f4f;
      width: 2px;
      height: 2px;
      background: transparent;
      box-shadow: $shadows-medium;
    }
  }

  #stars3 {
    width: 4px;
    height: 4px;
    background: transparent;
    box-shadow: $shadows-big;
    animation: animStar 150s linear infinite;

    &:after {
      content: " ";
      position: absolute;
      top: 2000px;
      width: 3px;
      height: 3px;
      background: transparent;
      box-shadow: $shadows-big;
    }
  }

  @keyframes animStar {
    from {
      transform: translateY(0px);
    }
    to {
      transform: translateY(-2000px);
    }
  }
}