diff --git a/less/knacss.less b/less/knacss.less
index eb23fa4..307835a 100644
--- a/less/knacss.less
+++ b/less/knacss.less
@@ -679,8 +679,7 @@ textarea {
 	}
 
 	/* margins for large (l) screens */
-	.large-ma0,
-	.large-man { margin: 0 !important; }
+	.large-ma0 { margin: 0 !important; }
 }
 
 @media (max-width: @smallscreen) {
@@ -763,7 +762,6 @@ textarea {
 
 	/* quick smartphone reset */
 	.mod,
-	.item,
 	.col,
 	fieldset {
 		display: block !important;
@@ -774,10 +772,6 @@ textarea {
 		margin-right: 0 !important;
 		border: 0;
 	}
-	.w30,
-	.w33, 
-	.w40,
-	.w50,
 	.w300p,
 	.w400p,
 	.w500p {
@@ -832,8 +826,7 @@ textarea {
 		border: 0;
 	}
 	/* margins for tiny (t) screens */
-	.tiny-ma0,
-	.tiny-man { margin: 0 !important; }
+	.tiny-ma0 { margin: 0 !important; }
 }
 
 /* orientation iOS font-size fix */