diff --git a/theme.css b/theme.css
index a2521b9..3cdfb2b 100644
--- a/theme.css
+++ b/theme.css
@@ -15,7 +15,7 @@
 }
 
 .board {
-  flex-wrap: wrap;
+  flex-wrap: row wrap;
 }
 
 .board-column:first-child {
@@ -24,4 +24,23 @@
 
 .board-column {
   margin-bottom: .5rem !important;
+  flex: 1 !important;
+}
+
+@media screen and (max-width: 992px) {
+	.item {
+		flex-basis: 25%;
+	}
+}
+
+@media screen and (max-width: 640px) {
+	.item {
+		flex-basis: 50%;
+	}
+}
+
+@media screen and (max-width: 420px) {
+	.item {
+		flex-basis: 100%;
+	}
 }