diff --git a/jam-ui/src/components/common/WindowPortal.js b/jam-ui/src/components/common/WindowPortal.js
index 8ed02f2b6..dc113ba73 100644
--- a/jam-ui/src/components/common/WindowPortal.js
+++ b/jam-ui/src/components/common/WindowPortal.js
@@ -68,6 +68,21 @@ const WindowPortal = ({
     newWindow.document.body.style.backgroundColor = '#f8f9fa';
     newWindow.document.body.style.overflow = 'hidden';
 
+    // Copy all stylesheets from parent window to popup
+    const stylesheets = Array.from(document.querySelectorAll('link[rel="stylesheet"], style'));
+    stylesheets.forEach(sheet => {
+      if (sheet.tagName === 'LINK') {
+        const newLink = newWindow.document.createElement('link');
+        newLink.rel = 'stylesheet';
+        newLink.href = sheet.href;
+        newWindow.document.head.appendChild(newLink);
+      } else if (sheet.tagName === 'STYLE') {
+        const newStyle = newWindow.document.createElement('style');
+        newStyle.textContent = sheet.textContent;
+        newWindow.document.head.appendChild(newStyle);
+      }
+    });
+
     // Add window ID for identification
     if (windowId) {
       newWindow.windowId = windowId;