Checkerboard

background-image: linear-gradient(45deg, {{{1}}} 25%, transparent 25%, transparent 75%, {{{1}}} 75%, {{{1}}}), linear-gradient(45deg, {{{1}}} 25%, transparent 25%, transparent 75%, {{{1}}} 75%, {{{1}}}); background-size: 60px 60px; background-position: 0 0, 30px 30px