diff --git a/content.js b/content.js
index 11e41d4..926b302 100644
--- a/content.js
+++ b/content.js
@@ -180,7 +180,7 @@
     btn.id = BTN_ID;
     btn.type = 'button';
     btn.className = 'btn green pull-right';
-    btn.style.marginTop = '10px';
+    btn.style.margin = '10px 0';
     btn.innerHTML = '<i class="fa fa-download"></i> Download PDF';
     btn.addEventListener('click', onDownloadPdf);
     unitsP.insertAdjacentElement('afterend', btn);