Update README.md

Indumathi1195R · web-flow · commit 3635d8668f17 · 2020-05-07T12:28:15.000+05:30
Image size modified.
diff --git a/README.md b/README.md
@@ -73,4 +73,4 @@ body: Card(
 
 **Screenshot**
 
-<img alt="Customization"  src="http://www.syncfusion.com/uploads/user/kb/flut/flut-858/flut-858_img1.png" width="250" height="400" />|
+<img alt="Customization"  src="http://www.syncfusion.com/uploads/user/kb/flut/flut-858/flut-858_img1.png" width="230" height="400" />|

Original file line number	Diff line number	Diff line change
`@@ -73,4 +73,4 @@ body: Card(`
`73`	`73`
`74`	`74`	`Screenshot`
`75`	`75`
`76`		`-<img alt="Customization" src="http://www.syncfusion.com/uploads/user/kb/flut/flut-858/flut-858_img1.png" width="250" height="400" />\|`
	`76`	`+<img alt="Customization" src="http://www.syncfusion.com/uploads/user/kb/flut/flut-858/flut-858_img1.png" width="230" height="400" />\|`