diff --git a/_config.yml b/_config.yml
new file mode 100644
index 0000000..7184b50
--- /dev/null
+++ b/_config.yml
@@ -0,0 +1,6 @@
+---
+# See <https://github.com/jekyll/jekyll/issues/9297#issuecomment-2137865682>
+# for why we use kramdown.
+markdown: kramdown
+kramdown:
+  parse_block_html: true
diff --git a/publications/mwis2024.md b/publications/mwis2024.md
index 8914a83..a1ad4d5 100644
--- a/publications/mwis2024.md
+++ b/publications/mwis2024.md
@@ -56,7 +56,7 @@ In the paper we subdivide the large and relatively diverse collection of AVR dat
 The groups are selected based on the number of nodes in the problem instances.
 More information are presented in the paper.
 
-<details>
+<details markdown="span">
 <summary>Group mapping in JSON format</summary>
 
 ```json
@@ -139,7 +139,7 @@ The AVR problem instances have been original obtained from the [Amazon MWIS VR D
 The problem instances have been used as is.
 We converted the text file representation into our JSON clique graph format as well as into the Metis edge graph format.
 
-<details>
+<detail markdown="span">
 <summary>Mapping of instance number to original instance name as JSON</summary>
 
 ```json