diff --git a/index.html b/index.html
index ec89058..486b8c9 100644
--- a/index.html
+++ b/index.html
@@ -9,13 +9,16 @@
       name="description"
       content="Aotearoa New Zealand National Seismic Hazard Model (NSHM), also known as Te Tauira Matapae Pūmate Rū i Aotearoa. The NSHM calculates the likelihood and strength of earthquake shaking that may occur in different parts of Aotearoa New Zealand over specified time periods."
     />
+    <link
+      rel="stylesheet"
+      href="https://cdn.jsdelivr.net/npm/leaflet-timedimension@1.1.1/dist/leaflet.timedimension.control.min.css"
+    />
     <link
       rel="stylesheet"
       href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"
       integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A=="
       crossorigin=""
     />
-
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