diff --git a/src/styles.js b/src/styles.js
new file mode 100644
index 0000000000000000000000000000000000000000..4d8897088ba17d8eae079605850ee226fe156ec6
--- /dev/null
+++ b/src/styles.js
@@ -0,0 +1,10 @@
+import {css} from 'lit-element';
+
+export function getSignatureCss() {
+    // language=css
+    return css`
+        #pdf-preview {
+            position: sticky;
+            top: 0px;
+        }`;
+}
\ No newline at end of file
diff --git a/vendor/toolkit b/vendor/toolkit
index c46fef42c484e3175e20a7b1b321c51e8b6c7366..d8440964149b7c42b528094da2a7e112bf89bc79 160000
--- a/vendor/toolkit
+++ b/vendor/toolkit
@@ -1 +1 @@
-Subproject commit c46fef42c484e3175e20a7b1b321c51e8b6c7366
+Subproject commit d8440964149b7c42b528094da2a7e112bf89bc79