From bb14a35c4b965a08566bbbccbd6f9308f4253dc1 Mon Sep 17 00:00:00 2001
From: Yan Wong <yan.wong@bdi.ox.ac.uk>
Date: Tue, 10 Feb 2026 09:24:19 +0000
Subject: [PATCH] Add header

---
 content/tskit.ipynb    | 17 +++++++++-
 content/tskit_logo.svg | 72 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 content/tskit_logo.svg

diff --git a/content/tskit.ipynb b/content/tskit.ipynb
index 26312eb..855b2b2 100644
--- a/content/tskit.ipynb
+++ b/content/tskit.ipynb
@@ -1,5 +1,20 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "4df88319-4951-4846-80ea-b8026c0eb096",
+   "metadata": {},
+   "source": [
+    "<div style=\"color: white; background-color: #03303e; display: flex; align-items: flex-start; margin-bottom: 1em\">\n",
+    "    <figure style=\"text-align: center; margin: 0 1em 0.5em 0.5em\">\n",
+    "    <img src=\"tskit_logo.svg\" style=\"height: 3em;\" />\n",
+    "    <figcaption style=\"font-size: 0.6em; line-height: 1em\">Interactive workbooks</figcaption>\n",
+    "</figure>\n",
+    "    <h1 style=\"margin: auto\">An interactive tour of <em>tskit</em></span></h1></div>\n",
+    "\n",
+    "<div class=\"alert alert-block alert-info\"><b>Note:</b> This uses the <em>tskit</em> <a href=\"https://tskit.dev/tskit/docs/stable/python-api.html\">Python interface</a>. Press \"shift-enter\" (or click the toolbar \"run\" button, &#9654;) to run a notebook cell and move to the next one. Repeat this from the top of the workbook to work gradually through the demonstration code.</div>"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "19a48cc0-ae22-4840-a9dd-2a73b665f32a",
@@ -718,7 +733,7 @@
        "    "
       ],
       "text/plain": [
-       "<tskit.trees.TreeSequence at 0x108f1ae40>"
+       "<tskit.trees.TreeSequence at 0x104760a70>"
       ]
      },
      "execution_count": 3,
diff --git a/content/tskit_logo.svg b/content/tskit_logo.svg
new file mode 100644
index 0000000..658f9ac
--- /dev/null
+++ b/content/tskit_logo.svg
@@ -0,0 +1,72 @@
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+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="0 0 1434.6667 1149.8267"
+   height="1149.8267"
+   width="1434.6667"
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+   id="svg2"
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+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
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