fixed menu placement

src/Components/Dropdown.js

@@ -85,11 +85,11 @@ function Dropdown(props) {
         <ExpandMoreIcon/>
       </Button>
       { open &&
-        <Popper open={open} keepMounted transition disablePortal>
+        <Popper open={open} keepMounted transition disablePortal placement={'bottom'}>
           {({ TransitionProps, placement }) => (
             <Grow
               {...TransitionProps}
-              style={{ transformOrigin: placement === 'bottom' ? 'center top' : 'center bottom' }}
+              style={{ transformOrigin: 'center top !important', anchorOrigin : "center bottom !important"}}
             >
               <Paper id="menu-list-grow">
                 <MenuList>