title: Square pattern as background on a div (with pure CSS)
body: <p>I'm trying to find how to build this pattern, with parallel squares (each square with about 3px) to put as background on a div using css (not using an image background and repeating the X axe). I can only find chess patterns, which is not the case. Could anyone help me with that challenge? thank you really much!</p>
  
  <p>I did search for hours on google how to make this pattern here:</p>
  
  <p><a href="https://i.stack.imgur.com/NO521.png" rel="noreferrer"><img src="https://i.stack.imgur.com/NO521.png" alt="enter image description here"></a></p>