:root {
  --darkBlue: #19313e;
  --cream: #ffe4c4;
  --emerald: #40755e;
  --gold: #956d3c;
  --bronze: #634625;
}
body {
  margin:0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: var(--darkBlue);
}
.loader {
  position: relative;
  width: 90px;
  height: 90px;
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
}
span {
  width: 30px;
  height: 30px;
  position: relative;;
  /* background-color: var(--gold); */
}
span:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: white;
  animation: loading 1s linear 10;
}
@keyframes loading {
  0% {
    width: 100%;
    height: 100%;
  }
  100% {
    width: 0;
    height: 0;
  }
}
.s4:before,
.s5:before,
.s6:before {
  animation-delay: .1s;
}
.s7:before,
.s8:before,
.s9:before {
  animation-delay: .2s;
}