Thanks everyone for help!
I made it somehow like this:
PHP Code:
foreach($prelinie as $linia){
$linia = rtrim($linia);
$linia = str_pad($linia, $l_dlugosc);
$preformatowane .= '
<p class="pre-linia">'. htmlspecialchars($linia). '</p>';
}
and
Code:
.pre-linia {
page-break-before: avoid;
vertical-align: middle;
font-size: 6px;
white-space: pre;
font-family: monospace;
margin-top: -2px;
margin-bottom: -2px;
}
And it works like a charm!