diff --git a/README.Rmd b/README.Rmd
index 9c4f2a8..dc66ad8 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -25,9 +25,11 @@ knitr::opts_chunk$set(
 <!-- badges: end -->
 
 
-> [!WARNING]
-
-`{bpmodels}` is now *retired and will no longer be maintained*. We recommend using [`{epichains}`](https://github.com/epiverse-trace/epichains) instead. If you need help converting your code to use `{epichains}`, please [open a discussion on epichains](https://github.com/epiverse-trace/epichains/discussions).
+<div style="background-color: #ffcccc; border: 1px solid #ff0000; padding: 10px; margin-bottom: 20px;">
+  <strong style="color: #ff0000;">️ WARNING:</strong>
+  <p style="margin: 0;">`{bpmodels}` is now *retired and will no longer be maintained*. We
+recommend using [`{epichains}`](https://github.com/epiforecasts/epichains) instead. If you need help converting your code to use `{epichains}`, please [open a discussion on epichains](https://github.com/epiforecasts/epichains/discussions).</p>
+</div>
 
 ```{r setup, include=FALSE}
 knitr::opts_chunk$set(echo = TRUE)