Is it possible or is there a trick to make a background pixelated like the one in the image attached?
I use a background image, but as you can see it doesn’t scale and it flashs on page scrolling.

Now I have CSS thanks to vlcekmi3:
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;
But I’m unable to make it exactly like the image. Can someone check it?
Any code, resource, tutorial, and suggestion is appreciated.
Here’s the best I could come up with to match your image. It’s adapted from the example here by Lea Verou What will be your fallback for non css3 browsers?
jsfiddle example