diff --git a/theme.css b/theme.css
index 3cdfb2b..27b9ce5 100644
--- a/theme.css
+++ b/theme.css
@@ -28,19 +28,19 @@
 }
 
 @media screen and (max-width: 992px) {
-	.item {
+	.board-colomn {
 		flex-basis: 25%;
 	}
 }
 
 @media screen and (max-width: 640px) {
-	.item {
+	.board-colomn {
 		flex-basis: 50%;
 	}
 }
 
 @media screen and (max-width: 420px) {
-	.item {
+	.board-colomn {
 		flex-basis: 100%;
 	}
 }