diff --git a/css/flexbox.css b/css/flexbox.css
new file mode 100644
index 0000000..4ee1cbc
--- /dev/null
+++ b/css/flexbox.css
@@ -0,0 +1,65 @@
+
+
+/* ----------------------------- */
+/* ==flexbox classes */
+/* ----------------------------- */
+
+/* flexbox layout context on container */
+.flex {
+	display: -webkit-box;
+	display: -moz-box;
+	display: -ms-flexbox;
+	display: -webkit-flex;
+	display: flex;
+}
+/* horizontal alignment */
+.flex-h {
+	-webkit-box-orient: horizontal;
+	   -moz-box-orient: horizontal;
+	-webkit-flex-direction: row;
+	    -ms-flex-direction: row;
+	        flex-direction: row;
+}
+/* vertical alignment */
+.flex-v {
+	-webkit-box-orient: vertical;
+	   -moz-box-orient: vertical;
+	-webkit-flex-direction: column;
+	    -ms-flex-direction: column;
+	        flex-direction: column;
+}
+/* for fluid items */
+.flex-fluid {
+	-moz-box-flex: 1;
+	-webkit-flex: 1;
+	   -moz-flex: 1;
+	    -ms-flex: 1;
+	        flex: 1;
+}
+/* for items that must appear first */
+.flex-start {
+	-webkit-box-ordinal-group: -1;
+	-moz-box-ordinal-group: 0;
+	-ms-flex-order: -1;
+	-webkit-order: -1;
+	   -moz-order: -1;
+	        order: -1;
+}
+/* for items that must appear middle */
+.flex-mid {
+	-webkit-box-ordinal-group: 1;
+	-moz-box-ordinal-group: 1;
+	-ms-flex-order: 1;
+	-webkit-order: 1;
+	   -moz-order: 1;
+	        order: 1;
+}
+/* for items that must appear at the end */
+.flex-end {
+	-webkit-box-ordinal-group: 42;
+	-moz-box-ordinal-group: 42;
+	-ms-flex-order: 42;
+	-webkit-order: 42;
+	   -moz-order: 42;
+	        order: 42;
+}
diff --git a/css/knacss.css b/css/knacss.css
index 7a593f7..28d65f2 100644
--- a/css/knacss.css
+++ b/css/knacss.css
@@ -1,5 +1,5 @@
 /*
-* www.KNACSS.com V2.6j @author: Raphael Goetter, Alsacreations
+* www.KNACSS.com V2.6k @author: Raphael Goetter, Alsacreations
 * Licence CC-BY http://creativecommons.org/licenses/by/3.0/fr/ 
 */
 
@@ -261,60 +261,6 @@ body > script {display: none !important;}
 	vertical-align: top;
 }
 
-/* flexbox layout */
-.flex {
-	display: -webkit-box;
-	display: -moz-box;
-	display: -ms-flexbox;
-	display: -webkit-flex;
-	display: flex;
-}
-.flex-h {
-	-webkit-box-orient: horizontal;
-	   -moz-box-orient: horizontal;
-	-webkit-flex-direction: row;
-	    -ms-flex-direction: row;
-	        flex-direction: row;
-}
-.flex-v {
-	-webkit-box-orient: vertical;
-	   -moz-box-orient: vertical;
-	-webkit-flex-direction: column;
-	    -ms-flex-direction: column;
-	        flex-direction: column;
-}
-.flex-fluid {
-	-moz-box-flex: 1;
-	-webkit-flex: 1;
-	   -moz-flex: 1;
-	    -ms-flex: 1;
-	        flex: 1;
-}
-.flex-start {
-	-webkit-box-ordinal-group: -1;
-	-moz-box-ordinal-group: 0;
-	-ms-flex-order: -1;
-	-webkit-order: -1;
-	   -moz-order: -1;
-	        order: -1;
-}
-.flex-mid {
-	-webkit-box-ordinal-group: 1;
-	-moz-box-ordinal-group: 1;
-	-ms-flex-order: 1;
-	-webkit-order: 1;
-	   -moz-order: 1;
-	        order: 1;
-}
-.flex-end {
-	-webkit-box-ordinal-group: 42;
-	-moz-box-ordinal-group: 42;
-	-ms-flex-order: 42;
-	-webkit-order: 42;
-	   -moz-order: 42;
-	        order: 42;
-}
-
 /* alignments (blocks and inline) */
 /* ------------------------------ */