printpdf 0.9.1

Rust library for reading and writing PDF files
Documentation 
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<!DOCTYPE html>
<html>
<head>
    <title>Margin Collapsing Test</title>
    <style>
        body {
            font-family: 'Helvetica', sans-serif;
            margin: 20px;
            background-color: #f0f0f0;
        }
        h1 {
            margin-top: 10px;
            margin-bottom: 30px;
            background-color: #ffcccc;
        }
        p {
            margin-top: 20px;
            margin-bottom: 20px;
            background-color: #ccffcc;
        }
        .box {
            background-color: #ccccff;
            margin: 40px 0;
        }
    </style>
</head>
<body>
    <!-- Test 1: Body-H1 top margin collapse -->
    <!-- Expected: body margin (20px) should collapse with h1 margin-top (10px) → 20px -->
    <!-- Bug: Margins are added → 30px -->
    <h1>Test Heading 1</h1>
    
    <!-- Test 2: H1-P margin collapse -->
    <!-- Expected: h1 margin-bottom (30px) should collapse with p margin-top (20px) → 30px -->
    <!-- Bug: Margins are added → 50px -->
    <p>First paragraph after heading.</p>
    
    <!-- Test 3: P-P sibling margin collapse -->
    <!-- Expected: p margin-bottom (20px) should collapse with next p margin-top (20px) → 20px -->
    <!-- Bug: Margins are added → 40px -->
    <p>Second paragraph.</p>
    
    <p>Third paragraph.</p>
    
    <!-- Test 4: Large margin wins -->
    <!-- Expected: p margin-bottom (20px) should collapse with div margin-top (40px) → 40px -->
    <div class="box">Box content</div>
    
    <p>Paragraph after box.</p>
</body>
</html>