CSS3 Rainbow Background | Css3 Backgrounds & Patterns

background: linear-gradient(0deg, transparent 0%, #31009c 12%, #000084 25%,#009cff 37%,#00bd00 50%,#fff700 62%,#ff6331 75%,#de0000 87%,transparent 100%);
background-color: #000;
background-size: 10px 600px;
background-repeat:repeat-x;