diff --git a/README.md b/README.md
index 1725fb5..eea2290 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # rotate-image
 
-rotate image each time by 90 degree.
+truely rotate image itself each time by 90 degree without using `transform: rotate`
 
 # installation