(theme) improve default box shadow

Author: antoine92190

src/themes/index.js

@@ -14,7 +14,7 @@ export const defaultThemeStyles = {
 			border: 'none',
 			borderRadius: '4px',
 			boxShadow:
-				'0px 3px 1px -2px rgba(0, 0, 0, 0.2), 0px 2px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12)'
+				'0px 1px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12)'
 		},
 
 		header: {
@@ -124,7 +124,7 @@ export const defaultThemeStyles = {
 			border: 'none',
 			borderRadius: '4px',
 			boxShadow:
-				'0px 3px 1px -2px rgba(0, 0, 0, 0.2), 0px 2px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12)'
+				'0px 1px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12)'
 		},
 
 		header: {