background-image:
linear-gradient(45deg,#fbd 25%,transparent 25%,transparent 75%,#fbd 75%),
linear-gradient(-45deg,#fbd 25%,#f7b 25%, #f7b 75%,#fbd 75%);
background-size:16px 16px;

background-image:
linear-gradient(45deg,#fd6 25%,transparent 25%,transparent 75%,#fd6 75%),
linear-gradient(-45deg,#fd6 25%,#fa0 25%, #fa0 75%,#fd6 75%);
background-size:16px 16px;

background-image:
linear-gradient(45deg,#ce7 25%,transparent 25%,transparent 75%,#ce7 75%),
linear-gradient(-45deg,#ce7 25%,#8c0 25%, #8c0 75%,#ce7 75%);
background-size:16px 16px;

background-image:
linear-gradient(45deg,#bdf 25%,transparent 25%,transparent 75%,#bdf 75%),
linear-gradient(-45deg,#bdf 25%,#7bf 25%, #7bf 75%,#bdf 75%);
background-size:16px 16px;

background-image:
linear-gradient(45deg,#cbf 25%,transparent 25%,transparent 75%,#cbf 75%),
linear-gradient(-45deg,#cbf 25%,#97e 25%, #97e 75%,#cbf 75%);
background-size:16px 16px;