.checkerboard > div:nth-child(1) {
  -webkit-animation-delay: 4.7142857143s;
          animation-delay: 4.7142857143s;
}

.checkerboard > div:nth-child(2) {
  -webkit-animation-delay: 1.5714285714s;
          animation-delay: 1.5714285714s;
}

.checkerboard > div:nth-child(3) {
  -webkit-animation-delay: 3.8571428571s;
          animation-delay: 3.8571428571s;
}

.checkerboard > div:nth-child(4) {
  -webkit-animation-delay: 5.8571428571s;
          animation-delay: 5.8571428571s;
}

.checkerboard > div:nth-child(5) {
  -webkit-animation-delay: 6.1428571429s;
          animation-delay: 6.1428571429s;
}

.checkerboard > div:nth-child(6) {
  -webkit-animation-delay: 4.7142857143s;
          animation-delay: 4.7142857143s;
}

.checkerboard > div:nth-child(7) {
  -webkit-animation-delay: 5.4285714286s;
          animation-delay: 5.4285714286s;
}

.checkerboard > div:nth-child(8) {
  -webkit-animation-delay: 3.5714285714s;
          animation-delay: 3.5714285714s;
}

.checkerboard > div:nth-child(9) {
  -webkit-animation-delay: 2.5714285714s;
          animation-delay: 2.5714285714s;
}

.checkerboard > div:nth-child(10) {
  -webkit-animation-delay: 5s;
          animation-delay: 5s;
}

.checkerboard > div:nth-child(11) {
  -webkit-animation-delay: 1.7142857143s;
          animation-delay: 1.7142857143s;
}

.checkerboard > div:nth-child(12) {
  -webkit-animation-delay: 6.1428571429s;
          animation-delay: 6.1428571429s;
}

.checkerboard > div:nth-child(13) {
  -webkit-animation-delay: 0.8571428571s;
          animation-delay: 0.8571428571s;
}

.checkerboard > div:nth-child(14) {
  -webkit-animation-delay: 7s;
          animation-delay: 7s;
}

.checkerboard > div:nth-child(15) {
  -webkit-animation-delay: 5s;
          animation-delay: 5s;
}

.checkerboard > div:nth-child(16) {
  -webkit-animation-delay: 4.5714285714s;
          animation-delay: 4.5714285714s;
}

.checkerboard > div:nth-child(17) {
  -webkit-animation-delay: 6.5714285714s;
          animation-delay: 6.5714285714s;
}

.checkerboard > div:nth-child(18) {
  -webkit-animation-delay: 6.8571428571s;
          animation-delay: 6.8571428571s;
}

.checkerboard > div:nth-child(19) {
  -webkit-animation-delay: 6.7142857143s;
          animation-delay: 6.7142857143s;
}

.checkerboard > div:nth-child(20) {
  -webkit-animation-delay: 6.1428571429s;
          animation-delay: 6.1428571429s;
}

.checkerboard > div:nth-child(21) {
  -webkit-animation-delay: 6.7142857143s;
          animation-delay: 6.7142857143s;
}

.checkerboard > div:nth-child(22) {
  -webkit-animation-delay: 0.4285714286s;
          animation-delay: 0.4285714286s;
}

.checkerboard > div:nth-child(23) {
  -webkit-animation-delay: 5.1428571429s;
          animation-delay: 5.1428571429s;
}

.checkerboard > div:nth-child(24) {
  -webkit-animation-delay: 1.1428571429s;
          animation-delay: 1.1428571429s;
}

.checkerboard > div:nth-child(25) {
  -webkit-animation-delay: 3s;
          animation-delay: 3s;
}

.checkerboard > div:nth-child(26) {
  -webkit-animation-delay: 1.8571428571s;
          animation-delay: 1.8571428571s;
}

.checkerboard > div:nth-child(27) {
  -webkit-animation-delay: 3.4285714286s;
          animation-delay: 3.4285714286s;
}

.checkerboard > div:nth-child(28) {
  -webkit-animation-delay: 4.2857142857s;
          animation-delay: 4.2857142857s;
}

.checkerboard > div:nth-child(29) {
  -webkit-animation-delay: 4.8571428571s;
          animation-delay: 4.8571428571s;
}

.checkerboard > div:nth-child(30) {
  -webkit-animation-delay: 2.5714285714s;
          animation-delay: 2.5714285714s;
}

.checkerboard > div:nth-child(31) {
  -webkit-animation-delay: 1s;
          animation-delay: 1s;
}

.checkerboard > div:nth-child(32) {
  -webkit-animation-delay: 0.7142857143s;
          animation-delay: 0.7142857143s;
}

.checkerboard > div:nth-child(33) {
  -webkit-animation-delay: 4.5714285714s;
          animation-delay: 4.5714285714s;
}

.checkerboard > div:nth-child(34) {
  -webkit-animation-delay: 3.8571428571s;
          animation-delay: 3.8571428571s;
}

.checkerboard > div:nth-child(35) {
  -webkit-animation-delay: 2.7142857143s;
          animation-delay: 2.7142857143s;
}

.checkerboard > div:nth-child(36) {
  -webkit-animation-delay: 0.2857142857s;
          animation-delay: 0.2857142857s;
}

.checkerboard > div:nth-child(37) {
  -webkit-animation-delay: 0.7142857143s;
          animation-delay: 0.7142857143s;
}

.checkerboard > div:nth-child(38) {
  -webkit-animation-delay: 6s;
          animation-delay: 6s;
}

.checkerboard > div:nth-child(39) {
  -webkit-animation-delay: 5.5714285714s;
          animation-delay: 5.5714285714s;
}

.checkerboard > div:nth-child(40) {
  -webkit-animation-delay: 6.4285714286s;
          animation-delay: 6.4285714286s;
}

.checkerboard > div:nth-child(41) {
  -webkit-animation-delay: 0.2857142857s;
          animation-delay: 0.2857142857s;
}

.checkerboard > div:nth-child(42) {
  -webkit-animation-delay: 2.4285714286s;
          animation-delay: 2.4285714286s;
}

.checkerboard > div:nth-child(43) {
  -webkit-animation-delay: 4.5714285714s;
          animation-delay: 4.5714285714s;
}

.checkerboard > div:nth-child(44) {
  -webkit-animation-delay: 6.7142857143s;
          animation-delay: 6.7142857143s;
}

.checkerboard > div:nth-child(45) {
  -webkit-animation-delay: 0.5714285714s;
          animation-delay: 0.5714285714s;
}

.checkerboard > div:nth-child(46) {
  -webkit-animation-delay: 0.4285714286s;
          animation-delay: 0.4285714286s;
}

.checkerboard > div:nth-child(47) {
  -webkit-animation-delay: 1.7142857143s;
          animation-delay: 1.7142857143s;
}

.checkerboard > div:nth-child(48) {
  -webkit-animation-delay: 4.1428571429s;
          animation-delay: 4.1428571429s;
}

.checkerboard > div:nth-child(49) {
  -webkit-animation-delay: 0.7142857143s;
          animation-delay: 0.7142857143s;
}

.checkerboard {
  background-image: url("../image/walkrus-gradient.jpg");
  background-size: cover;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-template-rows: repeat(7, 1fr);
  height: 100vh;
  width: 100%;
}

@media screen and (prefers-reduced-motion: no-preference) {
  .checkerboard > div {
    -webkit-animation-name: poof;
            animation-name: poof;
    -webkit-animation-duration: 0.25s;
            animation-duration: 0.25s;
    -webkit-animation-fill-mode: forwards;
            animation-fill-mode: forwards;
    background: #fff;
  }

  .checkerboard > div:nth-child(even) {
    background: #2f2f2f;
  }
}
@-webkit-keyframes poof {
  to {
    opacity: 0;
  }
}
@keyframes poof {
  to {
    opacity: 0;
  }
}