:root {
  font-size: 20px;
  font-family: "IBM Plex Mono";
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.25);
}

body {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: #333333;
}

a {
  color: white;
  display: inline;
}

#error {
  margin-bottom: 1rem;
  font-size: 2rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.075em;
  color: #C94D4D;
  -webkit-animation: pulse 4s infinite alternate;
          animation: pulse 4s infinite alternate;
  position: relative;
}
@-webkit-keyframes pulse {
  from {
    opacity: 0.5;
  }
  50% {
    opacity: 0.5;
  }
}
@keyframes pulse {
  from {
    opacity: 0.5;
  }
  50% {
    opacity: 0.5;
  }
}
#error::before {
  content: "";
  width: 0.75rem;
  height: 50vh;
  margin-bottom: 0.75em;
  position: absolute;
  left: 50%;
  bottom: 100%;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1) 60%, transparent 100%);
}

#desc {
  margin: 2em 0 1em;
}

.error-num, .error-num__clip, .error-num__clip-left, .error-num__clip-left::before, .error-num__clip::before {
  position: relative;
  font-size: 10rem;
  font-family: "Oswald";
  letter-spacing: -0.01em;
  color: white;
  -webkit-animation: colorSplit 1.25s steps(2, end) infinite;
          animation: colorSplit 1.25s steps(2, end) infinite;
}
@-webkit-keyframes colorSplit {
  25% {
    text-shadow: -0.02em 0 0 #ED008C, 0.025em 0 0 #0087EF;
  }
  75% {
    text-shadow: -0.035em 0 0 #ED008C, 0.04em 0 0 #0087EF;
  }
}
@keyframes colorSplit {
  25% {
    text-shadow: -0.02em 0 0 #ED008C, 0.025em 0 0 #0087EF;
  }
  75% {
    text-shadow: -0.035em 0 0 #ED008C, 0.04em 0 0 #0087EF;
  }
}

.error-num__clip, .error-num__clip-left, .error-num__clip-left::before, .error-num__clip::before {
  position: absolute;
  top: 0;
  left: -2px;
  z-index: 10;
  color: #333;
  overflow: visible;
  -webkit-clip-path: polygon(0% 0%, 100% 0, 100% 25%, 0 25%, 0 30%, 100% 30%, 100% 50%, 0 50%, 0 60%, 100% 60%, 100% 65%, 0 65%, 0 80%, 100% 80%, 100% 85%, 0 85%, 0% 0%);
          clip-path: polygon(0% 0%, 100% 0, 100% 25%, 0 25%, 0 30%, 100% 30%, 100% 50%, 0 50%, 0 60%, 100% 60%, 100% 65%, 0 65%, 0 80%, 100% 80%, 100% 85%, 0 85%, 0% 0%);
  -webkit-animation: glitch 1s steps(2, start) infinite;
          animation: glitch 1s steps(2, start) infinite;
}
@-webkit-keyframes glitch {
  30% {
    left: 0;
  }
  to {
    left: 0;
  }
}
@keyframes glitch {
  30% {
    left: 0;
  }
  to {
    left: 0;
  }
}
.error-num__clip::before, .error-num__clip-left::before {
  content: "500";
  left: 0.05em;
  color: white;
  z-index: 9;
  -webkit-clip-path: polygon(0% 0%, 100% 0, 100% 26%, 0 26%, 0 29%, 100% 29%, 100% 51%, 0 51%, 0 59%, 100% 59%, 100% 66%, 0 66%, 0 79%, 100% 79%, 100% 86%, 0 86%, 0% 0%);
          clip-path: polygon(0% 0%, 100% 0, 100% 26%, 0 26%, 0 29%, 100% 29%, 100% 51%, 0 51%, 0 59%, 100% 59%, 100% 66%, 0 66%, 0 79%, 100% 79%, 100% 86%, 0 86%, 0% 0%);
}