filling right margin with my table in print

Question

i have a print using @media print. Now, i am having trouble about this, why it doesn't fill my table with it. I set the margin to 0 and also the @page margin into 0. Still it doesn't. Also i increase the size of my table th still it doesnt occupy the right space which i taked screen shot and i put red shade .

Here is the screenshot:

Here is my css:

@media print{
    .no-print {
      display: none;
    }
    printable {
      display: block;
      position: absolute;
      left: 0;
      top: 0;
      right: 0;
    }
    body {
      margin: 2mm 5mm 5mm 2mm;
    }
    table th {
      width: 40%;
    }
  }
  @page {
    margin: 0;
  }