style: dataset detail page style refactor (#2501)

* style: dataset detail page style refactor

* remove px

* remove py px px

* change shadow

* style: 2期联调结束

* 优化部分代码

projects/app/src/pages/dataset/list/index.tsx

@@ -155,7 +155,7 @@ const Dataset = () => {
                 placement="bottom-end"
                 Button={
                   <Button variant={'primary'} px="0">
-                    <Flex alignItems={'center'} px={'20px'}>
+                    <Flex alignItems={'center'} px={5}>
                       <AddIcon mr={2} />
                       <Box>{t('common:common.Create New')}</Box>
                     </Flex>