CSS - Grid-template-columns - with wrapping

gistfile1.txt

.grid-tiles {
	width: 100%;
	display: grid;
	// grid-template-columns: repeat(4, 1fr); // <- it doesn't wrap elements
	grid-template-columns: repeat(4, minmax(calc(#{percentage(1/4)} - #{pxToRem(16)}), 1fr)); // <- it wrap!
	grid-column-gap: pxToRem(16);
	grid-row-gap: pxToRem(16);
}