@import url("https://fonts.googleapis.com/css?family=Roboto:700");
* {
  box-sizing: border-box;
}
:root {
  --font-size: 4;
  --border-width: 4;
  --text: #fef160;
  --border: #be90d4;
  --color-one: #3fc380;
  --color-two: #f0ff00;
  --color-three: #f62459;
  --color-four: #19b5fe;
}
body {
  align-items: center;
  background-color: #111;
  display: flex;
  font-family: 'Roboto', sans-serif;
  justify-content: center;
  min-height: 100vh;
}
.showcase {
  display: grid;
  grid-template-rows: 20px calc(var(--font-size) * 1.25rem) 20px;
  grid-template-columns: repeat(10, calc(var(--font-size) * 1.25rem));
  position: relative;
}
.showcase__backdrop {
  background: #fff;
  bottom: 20px;
  left: calc((var(--font-size) * 1.25rem) - (var(--border-width) * 0.5px));
  opacity: 0.75;
  position: absolute;
  right: calc((var(--font-size) * 1.25rem) - (var(--border-width) * 0.5px));
  top: 20px;
}
.showcase__border {
  align-content: center;
  background: var(--border);
  border: 2px solid #000;
  display: grid;
  grid-column: 1/-1;
  grid-template-columns: repeat(10, calc(var(--font-size) * 1.25rem));
  justify-items: center;
}
.showcase__border div {
  background: #fafafa;
  border: 2px solid rgba(0,0,0,0.75);
  height: 12px;
  width: 12px;
}
.showcase__text {
  color: var(--text);
  font-size: calc(var(--font-size) * 1rem);
  grid-column: 2/-2;
  grid-row: 2;
  line-height: calc(var(--font-size) * 1.25rem);
  margin: 0;
  padding: 0;
  text-align: center;
  text-transform: uppercase;
  z-index: 3;
}
.showcase__text .word {
  display: grid;
  grid-gap: 0 calc(var(--border-width) * 1px);
  grid-template-columns: repeat(8, calc((var(--font-size) * 1.25rem) - calc(var(--border-width) * 1px)));
  padding: 0 2px;
}
.showcase__text .char {
  -webkit-animation-delay: calc(((var(--char-index) + 1) * var(--step)) * 1s);
          animation-delay: calc(((var(--char-index) + 1) * var(--step)) * 1s);
  -webkit-animation-duration: calc(var(--duration) * 1s);
          animation-duration: calc(var(--duration) * 1s);
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
  -webkit-animation-name: flash;
          animation-name: flash;
  background: #000;
  text-shadow: 0 4px 0 #000;
}
.showcase__text .char:nth-of-type(n) {
  --color: var(--color-one);
}
.showcase__text .char:nth-of-type(2n) {
  --color: var(--color-two);
}
.showcase__text .char:nth-of-type(3n) {
  --color: var(--color-three);
}
.showcase__text .char:nth-of-type(4n) {
  --color: var(--color-four);
}
@-webkit-keyframes flash {
  0%, 30%, 50%, 100% {
    background: #000;
  }
  40% {
    background: var(--color);
    -webkit-filter: drop-shadow(0 0 calc(var(--font-size) * 1rem) var(--color)) blur(2px) brightness(5);
            filter: drop-shadow(0 0 calc(var(--font-size) * 1rem) var(--color)) blur(2px) brightness(5);
  }
}
@keyframes flash {
  0%, 30%, 50%, 100% {
    background: #000;
  }
  40% {
    background: var(--color);
    -webkit-filter: drop-shadow(0 0 calc(var(--font-size) * 1rem) var(--color)) blur(2px) brightness(5);
            filter: drop-shadow(0 0 calc(var(--font-size) * 1rem) var(--color)) blur(2px) brightness(5);
  }
}