问题
I have html content that has to start at the absolute top left corner of the page. However, the HtmlConverter automatically adds a 0.5in gap from the top and left side of the pdf page. How do I override this default margin?
回答1:
You can set the margins of a page through CSS using @page. The following declaration sets all the page-margins to 0, as well as draws a border around paragraphs for visual reference:
@page{
margin:0pt;
}
p{
border-left: solid 2pt blue;
border-top: solid 1pt blue;
border-bottom: solid 1pt blue;
}
Use the following as input:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>margin example</title>
<link href="margin.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div>
<p>This page should have the margins set at 0</p>
</div>
</body>
</html>
And you'll see that the paragraph's border is touching the left side of the page, but not yet the top side. That's because the paragraph has some innate margin as a blockelement as well. Setting this to 0 will do the trick:
p{
border-left: solid 2pt blue;
border-top: solid 1pt blue;
border-bottom: solid 1pt blue;
margin-top: 0pt;
}
@page{
margin:0pt;
}
And the output:
来源：https://stackoverflow.com/questions/44936451/itext-7-overriding-default-margin-in-pdfhtml