fix: make sure page is not scrolled all way up on load

Author: FezVrasta

src/modifiers/applyStyles.js

@@ -37,7 +37,7 @@ function applyStyles({ state }: ModifierArguments<{||}>) {
 function effect({ state }: ModifierArguments<{||}>) {
   const initialStyles = {
     popper: {
-      position: 'absolute',
+      position: 'fixed',
       left: '0',
       top: '0',
       margin: '0',