*,
::before
::after {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background-color: #212121;
}

.fizzbuzz {
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, 11rem);
  justify-content: center;
  gap: 2rem;
  counter-reset: fizzbuzz;
}

.fizzbuzz-child {
  padding: .5rem;
  position: relative;
  overflow: hidden;
  text-align: center;
  border-radius: .25rem;
  background-color: #eee;
}

.fizzbuzz-child__count {
  width: 100%;
  height: 10rem;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border-radius: .2rem;
  font-size: 1.7rem;
  font-weight: bold;
  color: #fff;
  background-color: #455A64;
}

.fizzbuzz-child::before,
.fizzbuzz-child::after {
  content: '';
  padding: 0.5rem 3rem;
  position: absolute;
  font-size: 1.2rem;
  color: #fff;
  text-transform: uppercase;
}

.fizzbuzz-child:nth-child(3n)::before {
  top: 0;
  left: 0;
  -webkit-transform: translate(-30%, 13%) rotate(-45deg);
          transform: translate(-30%, 13%) rotate(-45deg);
  -webkit-transform-origin: center;
          transform-origin: center;
  content: 'fizz';
  background-color: #EF6C00;
}

.fizzbuzz-child:nth-child(5n)::after {
  top: 0;
  right: 0;
  -webkit-transform: translate(30%, 13%) rotate(45deg);
          transform: translate(30%, 13%) rotate(45deg);
  -webkit-transform-origin: center;
          transform-origin: center;
  content: 'buzz';
  background-color: #303F9F;
}