Fix/dropdown: Flexbox 수정사항 반영 (#37)

* fix: flexbox props 수정 반영

* fix: 불필요한 import 삭제

Author: prayinforrain

src/components/Dropdown/index.tsx

@@ -3,7 +3,7 @@ import { css } from '@emotion/react';
 import styled from '@emotion/styled';
 import { DefaultProps } from '@utils/types/DefaultProps';
 import { DefaultPropsWithChildren } from '@utils/types/DefaultPropsWithChildren';
-import React, { MouseEvent, MouseEventHandler, ReactNode, useRef } from 'react';
+import { MouseEvent, MouseEventHandler, ReactNode, useRef } from 'react';
 import { IconType } from 'react-icons/lib';
 
 type DropdownAlign = 'left' | 'right' | 'center';
@@ -59,7 +59,7 @@ const DropdownItem = ({
         </Flexbox>
       )}
       <Flexbox
-        direction="column"
+        flexDirection="column"
         gap=".3rem"
         alignItems="center"
         css={css`