diff --git a/server/src/modules/documents/router.ts b/server/src/modules/documents/router.ts
index eb979a3..a5fc481 100644
--- a/server/src/modules/documents/router.ts
+++ b/server/src/modules/documents/router.ts
@@ -153,8 +153,10 @@ function buildShippingLabelPdf(options: {
       <head>
         <style>
           @page { size: 4in 6in; margin: 0.15in; }
+          *, *::before, *::after { box-sizing: border-box; }
+          html, body { width: 100%; height: 100%; margin: 0; padding: 0; }
           body { font-family: ${company.theme.fontFamily}, Arial, sans-serif; color: #111827; font-size: 11px; }
-          .label { border: 2px solid #111827; border-radius: 6px; padding: 6px; display: flex; flex-direction: column; gap: 6px; min-height: 5.7in; box-sizing: border-box; }
+          .label { border: 2px solid #111827; border-radius: 6px; padding: 6px; display: flex; flex-direction: column; gap: 6px; height: 100%; overflow: hidden; }
           .row { display: flex; justify-content: space-between; gap: 8px; }
           .muted { font-size: 9px; text-transform: uppercase; letter-spacing: 0.08em; color: #4b5563; }
           .brand { border-bottom: 2px solid ${company.theme.primaryColor}; padding-bottom: 6px; }
