diff --git a/www/conservancy/static/css/conservancy-bigscreen.css b/www/conservancy/static/css/conservancy-bigscreen.css
new file mode 100644
index 0000000000000000000000000000000000000000..ebb41a7ffd6bc3c709c2af2075cc392c3d9ad5c1
--- /dev/null
+++ b/www/conservancy/static/css/conservancy-bigscreen.css
@@ -0,0 +1,12 @@
+/* "Big screen" means, approximately, bigger than a phone */
+
+.column:nth-child(odd) {
+    clear: both;
+    float: left;
+    width: 49%;
+}
+
+.column:nth-child(even) {
+    float: right;
+    width: 49%;
+}