diff --git a/modules/docs/src/Volo.Docs.Web/Markdown/Renderers/HighlightedCodeBlockRenderer.cs b/modules/docs/src/Volo.Docs.Web/Markdown/Renderers/HighlightedCodeBlockRenderer.cs
index 6ac3b178df..07209eb912 100644
--- a/modules/docs/src/Volo.Docs.Web/Markdown/Renderers/HighlightedCodeBlockRenderer.cs
+++ b/modules/docs/src/Volo.Docs.Web/Markdown/Renderers/HighlightedCodeBlockRenderer.cs
@@ -119,13 +119,20 @@ namespace Volo.Docs.Markdown.Renderers
                 if (line.Contains("-"))
                 {
                     var numbers = line.Split("-");
+                    if (numbers.Length > 2)
+                    {
+                        continue;
+                    }
+
+                    if (!int.TryParse(numbers[0], out var minLineNumber) ||
+                        !int.TryParse(numbers[1], out var maxLineNumber))
+                    {
+                        continue;
+                    }
 
-                    foreach (var number in numbers)
+                    for (var lineNumber = minLineNumber; lineNumber < maxLineNumber + 1; lineNumber++)
                     {
-                        if (int.TryParse(number, out var lineNumber))
-                        {
-                            highlightedLines.Add(lineNumber);
-                        }
+                        highlightedLines.Add(lineNumber);
                     }
                 }
                 else
diff --git a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
index b6a33ec2ad..4d59707f5e 100644
--- a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
+++ b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/Index.cshtml
@@ -27,6 +27,7 @@
         <abp-script type="@typeof(MalihuCustomScrollbarPluginStyleBundleContributor)" />
         <abp-style src="/Pages/Documents/Project/bootstrap-toc.css" />
         <abp-style src="/Pages/Documents/Shared/Styles/vs.css" />
+        <abp-style src="/Pages/Documents/Project/index.css"/>
     </abp-style-bundle>
 }
 @section scripts {
diff --git a/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/index.css b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/index.css
new file mode 100644
index 0000000000..52dd43fbbe
--- /dev/null
+++ b/modules/docs/src/Volo.Docs.Web/Pages/Documents/Project/index.css
@@ -0,0 +1,5 @@
+.line-highlight {
+    margin-top: 1.5em !important;
+    background: rgb(176 199 52 / 20%) !important;
+    padding: 1px !important;
+}
\ No newline at end of file