How to remove document margin?

I’m trying to remove document margin, so I can paint/handle it myself accordingly to the page I’m on. But it seems the only way to do it is adding negative margin to @page as margin: 0mm; doesn’t works at all.

How can I fully remove the document margin?

[goshatch]

Has there been any updates on the right side white stripe issue? Just betting on A4 working well because it’s the default doesn’t solve my use case unfortunately.

[fro]

No matter the parameters, nothing can prevent the white strip to appear up, right, down. Here’s what I have tried:

@page {
  // default
}

@page {
  margin: 0px 0px 0px 0px;
}

@page {
  -relaxed-page-size: A4;
  size: A4;
}

@page {
  -relaxed-page-width: 210mm;
  -relaxed-page-height: 297mm;
  size: 210mm 297mm;
}

@page {
  -relaxed-page-width: 210mm;
  -relaxed-page-height: 297mm;
  -relaxed-page-size: A4;
  size: A4;
  margin: 0px 0px 0px 0px;
}

@page {
  -relaxed-page-width: 210mm;
  -relaxed-page-height: 297mm;
  size: 210mm 297mm;
  margin: 0px 0px 0px 0px;
}

The best I can do is 21,01 × 29,71 cm instead of 210 mm × 297 mm.

My two cents, @Zulko is right about the float precision.