html {
  box-sizing: border-box;
}

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

.pn-squares {
  width: 100%;
  height: 100%;
}
.pn-squares .pn-squares-row {
  width: 100%;
  position: relative;
}
.pn-squares .pn-squares-row .pn-squares-tile {
  position: absolute;
  top: 0;
  bottom: 0;
  display: inline-block;
  overflow: hidden;
}