glitch.css

html, body {
  margin: 0; padding: 0;
  background: rgba(0, 0, 0, 0);
  font-family: "Source Sans Pro", Arial;
}

/* From https://github.com/codrops/CSSGlitchEffect/blob/master/css/demo1.css */

body {
  --color-text: #fff;
  --color-bg: #000;
  --color-link: #f9d77e;
  --color-link-hover: #fff;
  --color-info: #efc453;
  --glitch-width: 100vw;
  --glitch-height: 100vh;
  --gap-horizontal: 10px; /* try 10px */
  --gap-vertical: 5px; /* try 5px */
  --time-anim: 4s;
  --delay-anim: 2s;
  --blend-mode-1: none;
  --blend-mode-2: none;
  --blend-mode-3: none;
  --blend-mode-4: none;
  --blend-mode-5: overlay;
  --blend-color-1: transparent;
  --blend-color-2: transparent;
  --blend-color-3: transparent;
  --blend-color-4: transparent;
  --blend-color-5: #af4949;
  animation: flippity 1s linear infinite;
}

@keyframes flippity {
  0% {
    visibility: visible;
  }
  49.99% {
    visibility: visible;
  }
  50% {
    visibility: hidden;
  }
  99.99% {
    visibility: hidden;
  }
}


/* Glitch styles */
.glitch {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--glitch-width);
  height: var(--glitch-height);
  overflow: hidden;
}

.glitch__img {
  position: absolute;
  top: calc(-1 * var(--gap-vertical));
  left: calc(-1 * var(--gap-horizontal));
  width: calc(100% + var(--gap-horizontal) * 2);
  height: calc(100% + var(--gap-vertical) * 2);
  background: url(#thumbnailCanvas) no-repeat 50% 0;
  background-color: var(--blend-color-1);
  background-size: cover;
  transform: translate3d(0,0,0);
  background-blend-mode: var(--blend-mode-1);
}

.glitch__img:nth-child(n+2) {
  opacity: 0;
}

.glitch .glitch__img:nth-child(n+2) {
  animation-duration: var(--time-anim);
  animation-delay: var(--delay-anim);
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.glitch .glitch__img:nth-child(2) {
  background-color: var(--blend-color-2);
  background-blend-mode: var(--blend-mode-2);
  animation-name: glitch-anim-1;
}

.glitch .glitch__img:nth-child(3) {
  background-color: var(--blend-color-3);
  background-blend-mode: var(--blend-mode-3);
  animation-name: glitch-anim-2;
}

.glitch .glitch__img:nth-child(4) {
  background-color: var(--blend-color-4);
  background-blend-mode: var(--blend-mode-4);
  animation-name: glitch-anim-3;
}

.glitch .glitch__img:nth-child(5) {
  background-color: var(--blend-color-5);
  background-blend-mode: var(--blend-mode-5);
  animation-name: glitch-anim-flash;
}

@keyframes glitch-anim-1 {
  0% {
    opacity: 1;
    transform: translate3d(var(--gap-horizontal),0,0);
    -webkit-clip-path: polygon(0 2%, 100% 2%, 100% 5%, 0 5%);
    clip-path: polygon(0 2%, 100% 2%, 100% 5%, 0 5%);
  }
  2% {
    -webkit-clip-path: polygon(0 15%, 100% 15%, 100% 15%, 0 15%);
    clip-path: polygon(0 15%, 100% 15%, 100% 15%, 0 15%);
  }
  4% {
    -webkit-clip-path: polygon(0 10%, 100% 10%, 100% 20%, 0 20%);
    clip-path: polygon(0 10%, 100% 10%, 100% 20%, 0 20%);
  }
  6% {
    -webkit-clip-path: polygon(0 1%, 100% 1%, 100% 2%, 0 2%);
    clip-path: polygon(0 1%, 100% 1%, 100% 2%, 0 2%);
  }
  8% {
    -webkit-clip-path: polygon(0 33%, 100% 33%, 100% 33%, 0 33%);
    clip-path: polygon(0 33%, 100% 33%, 100% 33%, 0 33%);
  }
  10% {
    -webkit-clip-path: polygon(0 44%, 100% 44%, 100% 44%, 0 44%);
    clip-path: polygon(0 44%, 100% 44%, 100% 44%, 0 44%);
  }
  12% {
    -webkit-clip-path: polygon(0 50%, 100% 50%, 100% 20%, 0 20%);
    clip-path: polygon(0 50%, 100% 50%, 100% 20%, 0 20%);
  }
  14% {
    -webkit-clip-path: polygon(0 70%, 100% 70%, 100% 70%, 0 70%);
    clip-path: polygon(0 70%, 100% 70%, 100% 70%, 0 70%);
  }
  16% {
    -webkit-clip-path: polygon(0 80%, 100% 80%, 100% 80%, 0 80%);
    clip-path: polygon(0 80%, 100% 80%, 100% 80%, 0 80%);
  }
  18% {
    -webkit-clip-path: polygon(0 50%, 100% 50%, 100% 55%, 0 55%);
    clip-path: polygon(0 50%, 100% 50%, 100% 55%, 0 55%);
  }
  20% {
    -webkit-clip-path: polygon(0 70%, 100% 70%, 100% 80%, 0 80%);
    clip-path: polygon(0 70%, 100% 70%, 100% 80%, 0 80%);
  }
  21.9% {
    opacity: 1;
    transform: translate3d(var(--gap-horizontal),0,0);
  }
  22%, 100% {
    opacity: 0;
    transform: translate3d(0,0,0);
    -webkit-clip-path: polygon(0 0, 0 0, 0 0, 0 0);
    clip-path: polygon(0 0, 0 0, 0 0, 0 0);
  }
}

@keyframes glitch-anim-2 {
  0% {
    opacity: 1;
    transform: translate3d(calc(-1 * var(--gap-horizontal)),0,0);
    -webkit-clip-path: polygon(0 25%, 100% 25%, 100% 30%, 0 30%);
    clip-path: polygon(0 25%, 100% 25%, 100% 30%, 0 30%);
  }
  3% {
    -webkit-clip-path: polygon(0 3%, 100% 3%, 100% 3%, 0 3%);
    clip-path: polygon(0 3%, 100% 3%, 100% 3%, 0 3%);
  }
  5% {
    -webkit-clip-path: polygon(0 5%, 100% 5%, 100% 20%, 0 20%);
    clip-path: polygon(0 5%, 100% 5%, 100% 20%, 0 20%);
  }
  7% {
    -webkit-clip-path: polygon(0 20%, 100% 20%, 100% 20%, 0 20%);
    clip-path: polygon(0 20%, 100% 20%, 100% 20%, 0 20%);
  }
  9% {
    -webkit-clip-path: polygon(0 40%, 100% 40%, 100% 40%, 0 40%);
    clip-path: polygon(0 40%, 100% 40%, 100% 40%, 0 40%);
  }
  11% {
    -webkit-clip-path: polygon(0 52%, 100% 52%, 100% 59%, 0 59%);
    clip-path: polygon(0 52%, 100% 52%, 100% 59%, 0 59%);
  }
  13% {
    -webkit-clip-path: polygon(0 60%, 100% 60%, 100% 60%, 0 60%);
    clip-path: polygon(0 60%, 100% 60%, 100% 60%, 0 60%);
  }
  15% {
    -webkit-clip-path: polygon(0 75%, 100% 75%, 100% 75%, 0 75%);
    clip-path: polygon(0 75%, 100% 75%, 100% 75%, 0 75%);
  }
  17% {
    -webkit-clip-path: polygon(0 65%, 100% 65%, 100% 40%, 0 40%);
    clip-path: polygon(0 65%, 100% 65%, 100% 40%, 0 40%);
  }
  19% {
    -webkit-clip-path: polygon(0 45%, 100% 45%, 100% 50%, 0 50%);
    clip-path: polygon(0 45%, 100% 45%, 100% 50%, 0 50%);
  }
  20% {
    -webkit-clip-path: polygon(0 14%, 100% 14%, 100% 33%, 0 33%);
    clip-path: polygon(0 14%, 100% 14%, 100% 33%, 0 33%);
  }
  21.9% {
    opacity: 1;
    transform: translate3d(calc(-1 * var(--gap-horizontal)),0,0);
  }
  22%, 100% {
    opacity: 0;
    transform: translate3d(0,0,0);
    -webkit-clip-path: polygon(0 0, 0 0, 0 0, 0 0);
    clip-path: polygon(0 0, 0 0, 0 0, 0 0);
  }
}

@keyframes glitch-anim-3 {
  0% {
    opacity: 1;
    transform: translate3d(0, calc(-1 * var(--gap-vertical)), 0) scale3d(-1,-1,1);
    -webkit-clip-path: polygon(0 1%, 100% 1%, 100% 3%, 0 3%);
    clip-path: polygon(0 1%, 100% 1%, 100% 3%, 0 3%);
  }
  1.5% {
    -webkit-clip-path: polygon(0 10%, 100% 10%, 100% 9%, 0 9%);
    clip-path: polygon(0 10%, 100% 10%, 100% 9%, 0 9%);
  }
  2% {
    -webkit-clip-path: polygon(0 5%, 100% 5%, 100% 6%, 0 6%);
    clip-path: polygon(0 5%, 100% 5%, 100% 6%, 0 6%);
  }
  2.5% {
    -webkit-clip-path: polygon(0 20%, 100% 20%, 100% 20%, 0 20%);
    clip-path: polygon(0 20%, 100% 20%, 100% 20%, 0 20%);
  }
  3% {
    -webkit-clip-path: polygon(0 10%, 100% 10%, 100% 10%, 0 10%);
    clip-path: polygon(0 10%, 100% 10%, 100% 10%, 0 10%);
  }
  5% {
    -webkit-clip-path: polygon(0 30%, 100% 30%, 100% 25%, 0 25%);
    clip-path: polygon(0 30%, 100% 30%, 100% 25%, 0 25%);
  }
  5.5% {
    -webkit-clip-path: polygon(0 15%, 100% 15%, 100% 16%, 0 16%);
    clip-path: polygon(0 15%, 100% 15%, 100% 16%, 0 16%);
  }
  7% {
    -webkit-clip-path: polygon(0 40%, 100% 40%, 100% 39%, 0 39%);
    clip-path: polygon(0 40%, 100% 40%, 100% 39%, 0 39%);
  }
  8% {
    -webkit-clip-path: polygon(0 20%, 100% 20%, 100% 21%, 0 21%);
    clip-path: polygon(0 20%, 100% 20%, 100% 21%, 0 21%);
  }
  9% {
    -webkit-clip-path: polygon(0 60%, 100% 60%, 100% 55%, 0 55%);
    clip-path: polygon(0 60%, 100% 60%, 100% 55%, 0 55%);
  }
  10.5% {
    -webkit-clip-path: polygon(0 30%, 100% 30%, 100% 31%, 0 31%);
    clip-path: polygon(0 30%, 100% 30%, 100% 31%, 0 31%);
  }
  11% {
    -webkit-clip-path: polygon(0 70%, 100% 70%, 100% 69%, 0 69%);
    clip-path: polygon(0 70%, 100% 70%, 100% 69%, 0 69%);
  }
  13% {
    -webkit-clip-path: polygon(0 40%, 100% 40%, 100% 41%, 0 41%);
    clip-path: polygon(0 40%, 100% 40%, 100% 41%, 0 41%);
  }
  14% {
    -webkit-clip-path: polygon(0 80%, 100% 80%, 100% 75%, 0 75%);
    clip-path: polygon(0 80%, 100% 80%, 100% 75%, 0 75%);
  }
  14.5% {
    -webkit-clip-path: polygon(0 50%, 100% 50%, 100% 51%, 0 51%);
    clip-path: polygon(0 50%, 100% 50%, 100% 51%, 0 51%);
  }
  15% {
    -webkit-clip-path: polygon(0 90%, 100% 90%, 100% 90%, 0 90%);
    clip-path: polygon(0 90%, 100% 90%, 100% 90%, 0 90%);
  }
  16% {
    -webkit-clip-path: polygon(0 60%, 100% 60%, 100% 60%, 0 60%);
    clip-path: polygon(0 60%, 100% 60%, 100% 60%, 0 60%);
  }
  18% {
    -webkit-clip-path: polygon(0 100%, 100% 100%, 100% 99%, 0 99%);
    clip-path: polygon(0 100%, 100% 100%, 100% 99%, 0 99%);
  }
  20% {
    -webkit-clip-path: polygon(0 70%, 100% 70%, 100% 71%, 0 71%);
    clip-path: polygon(0 70%, 100% 70%, 100% 71%, 0 71%);
  }
  21.9% {
    opacity: 1;
    transform: translate3d(0, calc(-1 * var(--gap-vertical)), 0) scale3d(-1,-1,1);
  }
  22%, 100% {
    opacity: 0;
    transform: translate3d(0,0,0);
    -webkit-clip-path: polygon(0 0, 0 0, 0 0, 0 0);
    clip-path: polygon(0 0, 0 0, 0 0, 0 0);
  }
}

@keyframes glitch-anim-text {
  0% {
    transform: translate3d(calc(-1 * var(--gap-horizontal)),0,0) scale3d(-1,-1,1);
    -webkit-clip-path: polygon(0 20%, 100% 20%, 100% 21%, 0 21%);
    clip-path: polygon(0 20%, 100% 20%, 100% 21%, 0 21%);
  }
  2% {
    -webkit-clip-path: polygon(0 33%, 100% 33%, 100% 33%, 0 33%);
    clip-path: polygon(0 33%, 100% 33%, 100% 33%, 0 33%);
  }
  4% {
    -webkit-clip-path: polygon(0 44%, 100% 44%, 100% 44%, 0 44%);
    clip-path: polygon(0 44%, 100% 44%, 100% 44%, 0 44%);
  }
  5% {
    -webkit-clip-path: polygon(0 50%, 100% 50%, 100% 20%, 0 20%);
    clip-path: polygon(0 50%, 100% 50%, 100% 20%, 0 20%);
  }
  6% {
    -webkit-clip-path: polygon(0 70%, 100% 70%, 100% 70%, 0 70%);
    clip-path: polygon(0 70%, 100% 70%, 100% 70%, 0 70%);
  }
  7% {
    -webkit-clip-path: polygon(0 80%, 100% 80%, 100% 80%, 0 80%);
    clip-path: polygon(0 80%, 100% 80%, 100% 80%, 0 80%);
  }
  8% {
    -webkit-clip-path: polygon(0 50%, 100% 50%, 100% 55%, 0 55%);
    clip-path: polygon(0 50%, 100% 50%, 100% 55%, 0 55%);
  }
  9% {
    -webkit-clip-path: polygon(0 70%, 100% 70%, 100% 80%, 0 80%);
    clip-path: polygon(0 70%, 100% 70%, 100% 80%, 0 80%);
  }
  9.9% {
    transform: translate3d(calc(-1 * var(--gap-horizontal)),0,0) scale3d(-1,-1,1);
  }
  10%, 100% {
    transform: translate3d(0,0,0) scale3d(1,1,1);
    -webkit-clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
  }
}

/* Flash */
@keyframes glitch-anim-flash {
  0%, 5% {
    opacity: 0.2;
    transform: translate3d(var(--gap-horizontal), var(--gap-vertical), 0);
  }
  5.5%, 100% {
    opacity: 0;
    transform: translate3d(0, 0, 0);
  }
}