:root {
  --size: 45vmin;
  --wid: 80vmin;
  --dur: 4.2s;
  --ease: cubic-bezier(0.165, 0.84, 0.44, 1);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  display: grid;
  place-items: center;
  overflow: hidden;
  -webkit-animation: bg-color var(--dur) var(--ease) infinite;
          animation: bg-color var(--dur) var(--ease) infinite;
}

.sword {
  position: absolute;
  bottom: 25%;
  left: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: rotate(-5deg);
  z-index: 2;
  transform-origin: 0 100%;
  -webkit-animation: chop var(--dur) var(--ease) infinite;
          animation: chop var(--dur) var(--ease) infinite;
}

.blade {
  --color-1: #e7e7e7;
  --color-2: #f3f3f3;
  width: calc(var(--size) / 5);
  height: calc(var(--size) / 1.25);
  position: relative;
  background-image: linear-gradient(to right, var(--color-1), var(--color-1) 50%, var(--color-2) 50%, var(--color-2) 100%);
  box-shadow: inset -1vmin 0 4vmin rgba(0, 0, 0, 0.075);
  -webkit-clip-path: polygon(50% 0%, 100% 15%, 100% 100%, 0 100%, 0% 15%);
          clip-path: polygon(50% 0%, 100% 15%, 100% 100%, 0 100%, 0% 15%);
  -webkit-animation: blade-glow var(--dur) var(--ease) infinite;
          animation: blade-glow var(--dur) var(--ease) infinite;
}

.handle {
  position: relative;
  width: calc(var(--size) / 8);
  height: calc(var(--size) / 3);
  background-color: #363636;
  border-radius: 0 0 0.5vmin 0.5vmin;
  box-shadow: inset 0 5vmin 2vmin rgba(0, 0, 0, 0.35), inset 2.5vmin 0 3vmin rgba(0, 0, 0, 0.35);
}
.handle:after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: calc(var(--size) / 2.75);
  height: calc(var(--size) / 20);
  background-color: inherit;
  transform: translateX(-50%);
  box-shadow: inset 1vmin -1vmin 2.5vmin rgba(0, 0, 0, 0.35);
  -webkit-clip-path: polygon(0 0, 100% 0, 95% 100%, 5% 100%);
          clip-path: polygon(0 0, 100% 0, 95% 100%, 5% 100%);
}

.square {
  position: relative;
  width: var(--wid);
  height: var(--size);
  perspective: 100vw;
  -webkit-animation: shake var(--dur) linear infinite;
          animation: shake var(--dur) linear infinite;
}
.square:before,
.square:after {
  content: "";
  position: absolute;
  top: 0;
  background-image: url('ex.jpg');
  background-size: cover;
  width: 100%;
  height: 100%;
  transform: translateX(100vw);
  transform-origin: 0 100%;
}

.square:before {
  -webkit-clip-path: polygon(26% 0, 76% 100%, 0 100%, 0 0);
  clip-path: polygon(26% 0, 76% 100%, 0 100%, 0 0);
  z-index: 1;
  -webkit-animation: square-left var(--dur) var(--ease) infinite, fade-out var(--dur) var(--ease) infinite;
  animation: square-left var(--dur) var(--ease) infinite, fade-out var(--dur) var(--ease) infinite;
}

.square:after {
  -webkit-clip-path: polygon(100% 0, 100% 100%, 75% 100%, 25% 0);
  clip-path: polygon(100% 0, 100% 100%, 75% 100%, 25% 0);
  z-index: 3;
  -webkit-animation: square-right var(--dur) var(--ease) infinite, fade-out var(--dur) var(--ease) infinite;
  animation: square-right var(--dur) var(--ease) infinite, fade-out var(--dur) var(--ease) infinite;
}

@-webkit-keyframes square-left {
  26% {
    transform: translateX(0);
  }
  100% {
    transform: translate(-5%, -5%) rotate(-1deg);
  }
}

@keyframes square-left {
  26% {
    transform: translateX(0);
  }
  100% {
    transform: translate(-5%, -5%) rotate(-1deg);
  }
}
@-webkit-keyframes square-right {
  26% {
    transform: translateX(0);
  }
  100% {
    transform: translate(5%, 5%) rotate(2deg);
  }
}
@keyframes square-right {
  26% {
    transform: translateX(0);
  }
  100% {
    transform: translate(5%, 5%) rotate(2deg);
  }
}
@-webkit-keyframes fade-out {
  88% {
    opacity: 1;
  }
  94%, 100% {
    opacity: 0;
  }
}
@keyframes fade-out {
  88% {
    opacity: 1;
  }
  94%, 100% {
    opacity: 0;
  }
}
@-webkit-keyframes chop {
  25% {
    transform: translate(-10%, -20%) rotate(-15deg);
  }
  26%, 30% {
    transform: translate(5%, 6%) rotate(125deg);
    z-index: 2;
  }
  42%, 80% {
    transform: translate(10%, 5%) rotate(120deg);
    z-index: 4;
  }
  100% {
    z-index: 4;
  }
}
@keyframes chop {
  25% {
    transform: translate(-10%, -20%) rotate(-15deg);
  }
  26%, 30% {
    transform: translate(5%, 6%) rotate(125deg);
    z-index: 2;
  }
  42%, 80% {
    transform: translate(10%, 5%) rotate(120deg);
    z-index: 4;
  }
  100% {
    z-index: 4;
  }
}
@-webkit-keyframes bg-color {
  25.25% {
    background-color: white;
  }
  25.251%, 88% {
    background-color: black;
  }
}
@keyframes bg-color {
  25.25% {
    background-color: white;
  }
  25.251%, 88% {
    background-color: black;
  }
}
@-webkit-keyframes square-color {
  25.25% {
    background-color: dodgerblue;
  }
  25.251%, 100% {
    background-color: crimson;
  }
}
@keyframes square-color {
  25.25% {
    background-color: dodgerblue;
  }
  25.251%, 100% {
    background-color: crimson;
  }
}
@-webkit-keyframes shake {
  0%, 25% {
    filter: blur(0);
  }
  25.5% {
    filter: blur(1vmin);
  }
  26% {
    transform: translateX(-2%);
    filter: blur(0);
  }
  28% {
    transform: translateX(2%) scale(0.98);
  }
  29% {
    transform: translateX(-3%);
  }
  30% {
    transform: translateX(1%);
  }
  31% {
    transform: translateX(0);
  }
}
@keyframes shake {
  0%, 25% {
    filter: blur(0);
  }
  25.5% {
    filter: blur(1vmin);
  }
  26% {
    transform: translateX(-2%);
    filter: blur(0);
  }
  28% {
    transform: translateX(2%) scale(0.98);
  }
  29% {
    transform: translateX(-3%);
  }
  30% {
    transform: translateX(1%);
  }
  31% {
    transform: translateX(0);
  }
}