diff --git a/report.tmpl b/report.tmpl
index b679543..d85195c 100644
--- a/report.tmpl
+++ b/report.tmpl
@@ -3,9 +3,34 @@
   <header>
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/water.css@2/out/water.css">
+    <script type="module">
+      import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm";
+    </script>
+    <style>
+      column {
+        display: flex;
+        flex-direction: column;
+        flex-grow: 1;
+      }
+      row {
+        display: flex;
+        flex-direction: row;
+        flex-grow: 1;
+      }
+    </style>
   </header>
   <body>
     <h1>Report</h1>
+    <row>
+      <column>
+        <row>c1 r1</row>
+        <row>c1 r2</row>
+      </column>
+      <column>
+        <row>c2 r1</row>
+        <row>c2 r2</row>
+      </column>
+    </row>
   </body>
   <footer>
   </footer>
