[website] Fix EmailSubscribe look (#38429)

Author: oliviertassinari

CHANGELOG.md

@@ -3717,7 +3717,7 @@ A big thanks to the 19 contributors who made this release possible. Here are som
 - [docs] Add webpack alias for legacy utils package (#33376) @jgbae
 - [docs] Improve external link icons synonyms (#33257) @davidgarciab
 - [examples] Update Base UI with Tailwind CSS to use the latest versions of the dependencies (#33401) @mnajdova
-- [examples] Add MUI base example (#33154) @siriwatknp
+- [examples] Add Base UI example (#33154) @siriwatknp
 
 ### Core
 

docs/src/components/footer/EmailSubscribe.tsx

@@ -131,9 +131,9 @@ export default function EmailSubscribe({ sx }: { sx?: SxProps<Theme> }) {
                 borderColor: 'primary.500',
               },
               [`& .${inputBaseClasses.input}`]: {
-                borderRadius: `calc(${theme.spacing(1)} - 1px)`,
+                borderRadius: `calc(${theme.shape.borderRadius}px - 1px)`,
                 py: '11px',
-                px: 1,
+                px: 1.5,
               },
             }),
             (theme) =>