style: Change layout style

src/pages/PostDetail/index.jsx

@@ -25,14 +25,14 @@ const PostDetail = () => {
       <S.WrittenTime>{data.written_at}</S.WrittenTime>
       <PanelLayout>
         <LeftPanel>
+          <SubTitle>최근 거래 가격</SubTitle>
+          <ProductPriceGraph id={data.product.id} />
           <S.Text>{data.text}</S.Text>
           <S.Price>가격 {data.price.toLocaleString()}원</S.Price>
         </LeftPanel>
         <RightPanel>
           <SubTitle>제품 사진</SubTitle>
           <ImageViewer images={data?.images?.map((image) => image.image)} />
-          <SubTitle>최근 거래 가격</SubTitle>
-          <ProductPriceGraph id={data.product.id} />
         </RightPanel>
       </PanelLayout>
     </S.PostDetail>

src/pages/WriteSteps/PriceStep.jsx

@@ -7,7 +7,6 @@ function PriceStep({ gotoNextStep, gotoPrevStep, price, setPrice }) {
   return (
     <S.Step>
       <S.Title>얼마에 팔고 싶나요?</S.Title>
-      <S.HelpText>가격</S.HelpText>
       <CurrencyInput
         value={price}
         setValue={setPrice}