 span 1 / 1; grid-column: 1 / 6;
 	background: rgba(0,0,0,0.15);
 	padding: 0.5em 0 0.25em;
	text-align: center; font: 1.33em Helvetica, sans-serif; margin: 0;}
h1 code {font: 1.1em monospace, serif;}

div[id] span[class*="box"] {box-sizing: border-box; color: inherit; background: hsla(117,50%,50%,0.25);}

#g1 {justify-content: space-between;}
#g2 {justify-content: space-around;}
#g3 {justify-content: space-evenly;}
#g4 {justify-content: space-evenly; width: 30%;}

span[class*="01"] {grid-row: 1; grid-colum