diff --git a/src/layout/css/style.scss b/src/layout/css/style.scss
index 2459fe5f..0ee5586f 100644
--- a/src/layout/css/style.scss
+++ b/src/layout/css/style.scss
@@ -129,7 +129,7 @@ $extra-media-width: 320px;
   color: black;
   display: block;
   font-family: 'Courier New', Courier, monospace;
-  height: $extra-height - 2 * $spacing;
+  max-height: $extra-height - 2 * $spacing;
   overflow-y: scroll;
   padding: $spacing;
   white-space: pre-wrap;
diff --git a/src/pytest_html/resources/style.css b/src/pytest_html/resources/style.css
index e3772743..e57717ec 100644
--- a/src/pytest_html/resources/style.css
+++ b/src/pytest_html/resources/style.css
@@ -110,7 +110,7 @@ span.xpassed,
   color: black;
   display: block;
   font-family: "Courier New", Courier, monospace;
-  height: 230px;
+  max-height: 230px;
   overflow-y: scroll;
   padding: 5px;
   white-space: pre-wrap;