<div class='error-banner'>
  <div class='error-404'></div>
</div>

$shadow: 262b30;
$highlight: dadede;
$number0: url('data:image/svg+xml;utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="159.8" height="111.8" viewBox="0 0 159.8 111.8"%3E%3Cpath fill="%231d2125" d="M60 0L0 33.6v22.3l99.9 55.9 59.9-33.5V56z"/%3E%3Cpath fill="%23#{$highlight}" d="M60 5.2l-15.3 8.5L60 22.3l15.3-8.6L60 5.2M40 16.5L24.7 25 40 33.5 55.3 25 40 16.5M20 27.6L4.7 36.2 20 44.7l15.3-8.6L20 27.6M40 38.8l-15.3 8.5L40 55.9l15.3-8.6L40 38.8M79.9 16.4L64.6 25l15.3 8.6L95.1 25l-15.2-8.6M99.9 27.6l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M119.9 38.9l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M60 50l-15.3 8.5L60 67.1l15.3-8.6L60 50M80 61.2l-15.3 8.5L80 78.3l15.3-8.6L80 61.2M139.8 50l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M119.8 61.2l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M99.9 72.4l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5"/%3E%3C/svg%3E');
$number5: url('data:image/svg+xml;utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="159.8" height="111.8" viewBox="0 0 159.8 111.8"%3E%3Cpath fill="%231d2125" d="M99.9 22.4L80 33.5V11.2L60 0 0 33.6v22.3l60 33.6 19.9-11.2v22.3l20 11.2 59.9-33.5V56L99.9 22.4z"/%3E%3Cpath fill="%23#{$highlight}" d="M60 5.2l-15.3 8.5L60 22.3l15.3-8.6L60 5.2M40 16.5L24.7 25 40 33.5 55.3 25 40 16.5M20 27.6L4.7 36.2 20 44.7l15.3-8.6L20 27.6M40 38.8l-15.3 8.5L40 55.9l15.3-8.6L40 38.8M99.9 27.6l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M80 38.9l-15.3 8.5L80 56l15.3-8.6L80 38.9M119.9 38.9l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M60 50l-15.3 8.5L60 67.1l15.3-8.6L60 50M139.8 50l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M119.8 61.2l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M99.9 72.4l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5"/%3E%3C/svg%3E');
$number4: url('data:image/svg+xml;utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="159.8" height="89.5" viewBox="0 0 159.8 89.5"%3E%3Cpath fill="%231d2125" d="M60 0L40 11.2V33.6L20 22.4 0 33.6v22.3l60 33.6 39.9-22.3 39.9 22.3 20-11.2V56z"/%3E%3Cpath fill="%23#{$highlight}" d="M60 5.2l-15.3 8.5L60 22.3l15.3-8.6L60 5.2M20 27.6L4.7 36.2 20 44.7l15.3-8.6L20 27.6M40 38.8l-15.3 8.5L40 55.9l15.3-8.6L40 38.8M79.9 16.4L64.6 25l15.3 8.6L95.1 25l-15.2-8.6M99.9 27.6l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M80 38.9l-15.3 8.5L80 56l15.3-8.6L80 38.9M119.9 38.9l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M60 50l-15.3 8.5L60 67.1l15.3-8.6L60 50M139.8 50l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5"/%3E%3C/svg%3E');
$number2: url('data:image/svg+xml;utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="159.8" height="111.8" viewBox="0 0 159.8 111.8"%3E%3Cpath fill="%231d2125" d="M139.8 44.8L119.9 56V33.6L60 0 0 33.6v22.3l20 11.2 20-11.2v22.3l59.9 33.6 59.9-33.5V56l-20-11.2z"/%3E%3Cpath fill="%23#{$highlight}" d="M60 5.2l-15.3 8.5L60 22.3l15.3-8.6L60 5.2M40 16.5L24.7 25 40 33.5 55.3 25 40 16.5M20 27.6L4.7 36.2 20 44.7l15.3-8.6L20 27.6M79.9 16.4L64.6 25l15.3 8.6L95.1 25l-15.2-8.6M99.9 27.6l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M80 38.9l-15.3 8.5L80 56l15.3-8.6L80 38.9M60 50l-15.3 8.5L60 67.1l15.3-8.6L60 50M80 61.2l-15.3 8.5L80 78.3l15.3-8.6L80 61.2M139.8 50l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M119.8 61.2l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5M99.9 72.4l-15.3 8.5 15.3 8.6 15.3-8.6-15.3-8.5"/%3E%3C/svg%3E');

html {
  background: #262b30;
  height: 100%;
}

body {
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

.error-banner {
  $code-width: 160px;
  $code-height: 112px;
  $animation-step: .5s;
  
  z-index: 1;
  position: relative;
  text-align: center;
  transform: translate3d(0,0,0);
 
  .error-404, .error-500, .error-502 {
    margin: $code-height auto 2em;
    padding-left: $code-width;
    display: inline-block;
    height: $code-height;
    background-position: top left;
    animation: $animation-step ease-in-out fade-slide-left;

    &, &:before, &:after {
      display: inline-block;
      position: relative;
      background-repeat: no-repeat;
      content: "";
    }
    &:before, &:after {
      width: $code-width;
      height: $code-height;
    }
    &:before {
      top: -$code-height/2.9;
      margin-left: -90px;
      z-index: -1;
      background-position: top left;
      animation: $animation-step*2 ease-in-out fade-slide-left;
    }
    &:after {
      top: -$code-height/1.45;
      margin-left: -90px;
      z-index: -10;
      background-position: top left;
      animation: $animation-step*3 ease-in-out fade-slide-left;
    }
  }
  
  .error-404 {
    background-image: $number4;
    &:before { background-image: $number0; } 
    &:after  { background-image: $number4; }
  }
  .error-500 {
    &:before { background-image: $number5; }
    &, &:after { background-image: $number0; }
  }
  .error-502 {
    &:before { background-image: $number5; }
    & { background-image: $number0; }
    &:after { background-image: $number2; }
  }
}

@keyframes fade-slide-left {
  0%   { opacity: 0; transform: translate(28px, 15px); }
  50%  { opacity: 0; transform: translate(28px, 15px); }
  100% { opacity: 1; transform: translate(0, 0);}
}