When there are more columns in the Feature grid block than can fit in a single row, make the columns in the second row center-aligned

#feature-grid1 .container div:nth-child(2) {
	    justify-content: center;

Works both on Feature grid with four column view when you add 5th column and on Feature grid blocks with 3 columns by default


Insert into Page Settings>Custom Code>Header or Footer field and replace feature-grid1 with the respective block name