How to display a complete A4 HTML page?

[liuyong888]

The html:
Since I can't display my HTML code completely here, I changed the file extension to TXT.
a4.txt

Chrome Display(Scale by 50%):

Generatoer code:
I use Laravel-Snappy.
barryvdh/laravel-snappy: v0.4.8
$file_path = './a4.html';

$pdf = \PDF::loadFile($file_path)
    ->setPaper('a4')
    ->setOptions([
        'encoding' => 'utf-8',
        'margin-bottom' => 0,
        'margin-left' => 0,
        'margin-right' => 0,
        'margin-top' => 0,
    ]);
return $pdf->save($pdf_name)->inline($pdf_name);`

The generated PDF:
PDF file are not the same as HTML file!

How do I ensure that the red part of my HTML is fully displayed in PDF!
Plz!
@akerouanton
@alexpozzi

[stale]

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