CSS3 Checkered Pattern Similar to the polka-dots above we can also create a full seamless checkerboard pattern. This method requires a bit more syntax to get working, but it looks flawless in all CSS3-supported browsers. Also you can change the color values from white and black to match that of your own website color scheme.

CSS3 Checkered Pattern

body {
    background-color: white;
    background-image: linear-gradient(45deg, black 25%, transparent 25%, transparent 75%, black 75%, black), 
    linear-gradient(45deg, black 25%, transparent 25%, transparent 75%, black 75%, black);
    background-size: 100px 100px;
    background-position: 0 0, 50px 50px;
}