From 37a5b82f9e9195287125ac62b6fb5feafbbdedbe Mon Sep 17 00:00:00 2001
From: JanTang <me@chenjt.com>
Date: Thu, 4 Jun 2026 18:59:10 +0800
Subject: [PATCH] Fix incorrect em unit calculation in CssBoxProperties

---
 Source/HtmlRenderer/Core/Dom/CssBoxProperties.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/HtmlRenderer/Core/Dom/CssBoxProperties.cs b/Source/HtmlRenderer/Core/Dom/CssBoxProperties.cs
index e74671701..b4641e2a3 100644
--- a/Source/HtmlRenderer/Core/Dom/CssBoxProperties.cs
+++ b/Source/HtmlRenderer/Core/Dom/CssBoxProperties.cs
@@ -1432,7 +1432,7 @@ public double ActualBorderSpacingVertical
         /// <returns></returns>
         public double GetEmHeight()
         {
-            return ActualFont.Height;
+            return ActualFont.Size * 96d / 72d;
         }
 
         /// <summary>