Técnicas de Alineamiento antes de CSS Grid - position

:root {
  --box-size: 180px;
  --element-size: 60px;
}

.wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.box {
  height: var(--box-size);
  position: relative;
}

.element {
  width: var(--element-size);
  height: var(--element-size);
  position: absolute;
}

.box:nth-child(1) .element {
  top: 0;
  left: 0;
}
.box:nth-child(2) .element {
  top: 50%;
  left: 0;
  transform: translate(0, -50%);
}
.box:nth-child(3) .element {
  left: 0;
  bottom: 0;
}
.box:nth-child(4) .element {
  left: 50%;
  transform: translate(-50%, 0);
}
.box:nth-child(5) .element {
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.box:nth-child(6) .element {
  left: 50%;
  transform: translate(-50%, 0);
  bottom: 0;
}
.box:nth-child(7) .element {
  right: 0;
}
.box:nth-child(8) .element {
  right: 0;
  top: 50%;
  transform: translate(0, -50%);
}
.box:nth-child(9) .element {
  right: 0;
  bottom: 0;
}