You can download the pattern or use the CSS3 code below (you can copy the text).
body {
/* CSS3 pattern provided by JonesPatterns.com */
background-image:
linear-gradient(-45deg, #901520 47%, white 50%, transparent 51%),
linear-gradient(-315deg, #901520 47%, white 50%, transparent 51%);
background-color: #901520;
background-size: 60px 60px;
}