[FIXED #36] body class not rendered correctly + ensure doctype is ren…

…dered
w8tcha · Apr 11, 2024 · 5387e90 · 5387e90
1 parent 7414c05
commit 5387e90
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Showing 33 changed files with 79 additions and 46 deletions.
diff --git a/BootstrapEmailNet.Tests/BootstrapEmailTests.cs b/BootstrapEmailNet.Tests/BootstrapEmailTests.cs
@@ -53,7 +53,7 @@ public void TestStringInput()
                                 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
                                 <html>
                                 	<head>
-                                		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+                                		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
                                 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
                                 		<meta http-equiv="x-ua-compatible" content="ie=edge">
                                 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/combinations/images.html b/BootstrapEmailNet.Tests/tests/output/combinations/images.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/combinations/integration.html b/BootstrapEmailNet.Tests/tests/output/combinations/integration.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/combinations/lyft.html b/BootstrapEmailNet.Tests/tests/output/combinations/lyft.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/combinations/number-test.html b/BootstrapEmailNet.Tests/tests/output/combinations/number-test.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/combinations/product-hunt.html b/BootstrapEmailNet.Tests/tests/output/combinations/product-hunt.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/alert.html b/BootstrapEmailNet.Tests/tests/output/components/alert.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/badge.html b/BootstrapEmailNet.Tests/tests/output/components/badge.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/button.html b/BootstrapEmailNet.Tests/tests/output/components/button.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/card.html b/BootstrapEmailNet.Tests/tests/output/components/card.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/container-fluid.html b/BootstrapEmailNet.Tests/tests/output/components/container-fluid.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/container.html b/BootstrapEmailNet.Tests/tests/output/components/container.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/grid.html b/BootstrapEmailNet.Tests/tests/output/components/grid.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/hr.html b/BootstrapEmailNet.Tests/tests/output/components/hr.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/preview.html b/BootstrapEmailNet.Tests/tests/output/components/preview.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/stack.html b/BootstrapEmailNet.Tests/tests/output/components/stack.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/components/table.html b/BootstrapEmailNet.Tests/tests/output/components/table.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/align.html b/BootstrapEmailNet.Tests/tests/output/utilities/align.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/background.html b/BootstrapEmailNet.Tests/tests/output/utilities/background.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/border-radius.html b/BootstrapEmailNet.Tests/tests/output/utilities/border-radius.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/color.html b/BootstrapEmailNet.Tests/tests/output/utilities/color.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/display.html b/BootstrapEmailNet.Tests/tests/output/utilities/display.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/sizing.html b/BootstrapEmailNet.Tests/tests/output/utilities/sizing.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/spacing.html b/BootstrapEmailNet.Tests/tests/output/utilities/spacing.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/to-table.html b/BootstrapEmailNet.Tests/tests/output/utilities/to-table.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/typography.html b/BootstrapEmailNet.Tests/tests/output/utilities/typography.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet.Tests/tests/output/utilities/vertical-align.html b/BootstrapEmailNet.Tests/tests/output/utilities/vertical-align.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
 	<head>
-		<!-- Compiled with Bootstrap Email version: 1.4.2 -->
+		<!-- Compiled with Bootstrap Email version: 1.4.3 -->
 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 		<meta name="x-apple-disable-message-reformatting">

diff --git a/BootstrapEmailNet/BootstrapEmail.Net.csproj b/BootstrapEmailNet/BootstrapEmail.Net.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
 	<PropertyGroup>
-		<Version>1.4.2</Version>
+		<Version>1.4.3</Version>
 		<Title>Bootstrap Email</Title>
 		<PackageIcon>bootstrap-email.png</PackageIcon>
 		<Description>Bootstrap stylesheet, compiler, and inliner for responsive and consistent emails with the Bootstrap syntax you know and love.</Description>
@@ -235,18 +235,10 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<Content Include="bin\Release\net7.0\libsass32.dll">
-			<Pack>true</Pack>
-			<PackagePath>lib\net7.0</PackagePath>
-		</Content>
 		<Content Include="bin\Release\net7.0\libsass64.dll">
 			<Pack>true</Pack>
 			<PackagePath>lib\net7.0</PackagePath>
 		</Content>
-		<Content Include="bin\Release\net8.0\libsass32.dll">
-			<Pack>true</Pack>
-			<PackagePath>lib\net8.0</PackagePath>
-		</Content>
 		<Content Include="bin\Release\net8.0\libsass64.dll">
 			<Pack>true</Pack>
 			<PackagePath>lib\net8.0</PackagePath>

diff --git a/BootstrapEmailNet/Compiler.cs b/BootstrapEmailNet/Compiler.cs
@@ -72,12 +72,14 @@ public Compiler(string input, ConfigStore config, InputType type = InputType.Str
 
 	    if (!Directory.Exists(Path.Combine(AppContext.BaseDirectory, this.Config.SassLocation())))
 	    {
-		    GetEmbeddedCoreFiles();
+			GetEmbeddedCoreFiles();
 	    }
 
 	    var html = this.AddLayout(this.InputHtml);
 
-	    this.SassCompiler = new SassCompiler(new SassOptions { IncludePaths = this.Config.SassLoadPaths() });
+	    html = EnsureDoctype.Replace(html);
+
+		this.SassCompiler = new SassCompiler(new SassOptions { IncludePaths = this.Config.SassLoadPaths() });
 
 	    this.PreMailer = new PreMailer(html);
 
@@ -201,7 +203,7 @@ public void InlineCss()
     /// </summary>
     public void ConfigureHtml()
     {
-        HeadStyle.Build(this.Document, this.Config);
+		HeadStyle.Build(this.Document, this.Config);
         new AddMissingMetaTags(this.Document, this.Config).Build();
         new VersionComment(this.Document, this.Config).Build();
 
@@ -227,13 +229,13 @@ public string FinalizeDocument()
 	/// <summary>
 	/// Gets the embedded core files.
 	/// </summary>
-	private void GetEmbeddedCoreFiles()
+	private static void GetEmbeddedCoreFiles()
     {
 	    var assembly = typeof(BootstrapEmail).GetTypeInfo().Assembly;
 
 	    foreach (var s in assembly.GetManifestResourceNames())
 	    {
-		    WriteResourceToFile(assembly, s,
+			WriteResourceToFile(assembly, s,
 			    s.Replace("BootstrapEmail.Net.", "").Replace("scss.", "scss\\").Replace("components.", "components\\")
 				    .Replace("helpers.", "helpers\\").Replace("utilities.", "utilities\\")
 				    .Replace("variables.", "variables\\").Replace("templates.", "templates\\").Replace("core.", "core\\"));
@@ -246,7 +248,7 @@ private void GetEmbeddedCoreFiles()
 	/// <param name="assembly">The assembly.</param>
 	/// <param name="resourceName">Name of the resource.</param>
 	/// <param name="fileName">Name of the file.</param>
-	public void WriteResourceToFile(Assembly assembly, string resourceName, string fileName)
+	public static void WriteResourceToFile(Assembly assembly, string resourceName, string fileName)
     {
 	    using var resource = assembly.GetManifestResourceStream(resourceName);
 

diff --git a/BootstrapEmailNet/ConfigStore.cs b/BootstrapEmailNet/ConfigStore.cs
@@ -40,7 +40,7 @@ public class ConfigStore
     /// array of directories for loading sass imports.
     /// </summary>
     /// <value>array of directories for loading sass imports.</value>
-    public string[] sass_load_paths { get; set; } = Array.Empty<string>();
+    public string[] sass_load_paths { get; set; } = [];
 
     /// <summary>
     /// path to tmp folder for sass cache

diff --git a/BootstrapEmailNet/Converters/Body.cs b/BootstrapEmailNet/Converters/Body.cs
@@ -1,5 +1,8 @@
 namespace BootstrapEmail.Net.Converters;
 
+/// <summary>
+/// Class Body.
+/// </summary>
 public class Body : Base
 {
     /// <summary>
@@ -12,7 +15,10 @@ public Body(IHtmlDocument document, Config config)
     {
     }
 
-    public virtual void Build()
+	/// <summary>
+	/// Builds this instance.
+	/// </summary>
+	public virtual void Build()
     {
         var body = this.Document.QuerySelector("body");
 
@@ -22,7 +28,7 @@ public virtual void Build()
         }
 
         var templateContent = new TemplateContent(
-            $"{body.GetAttribute("class")}body",
+            $"{body.GetAttribute("class")} body",
             body.InnerHtml.Replace("\n", string.Empty));
 
         body.InnerHtml = $"\r\n    {this.Template("body", templateContent)}";

diff --git a/BootstrapEmailNet/Converters/EnsureDoctype.cs b/BootstrapEmailNet/Converters/EnsureDoctype.cs
@@ -0,0 +1,25 @@
+namespace BootstrapEmail.Net.Converters;
+
+/// <summary>
+/// Class EnsureDoctype.
+/// </summary>
+public static class EnsureDoctype
+{
+	/// <summary>
+	/// Replaces the specified HTML.
+	/// </summary>
+	/// <param name="html">The HTML.</param>
+	/// <returns>System.String.</returns>
+	public static string Replace(string html)
+	{
+		const string docType =
+			"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">";
+
+		// ensure the proper XHTML doctype which ensures the best compatibility in email clients
+		// https://github.com/bootstrap-email/bootstrap-email/discussions/168
+		var docTypeRegex =
+			new Regex(@"^<!DOCTYPE.*(\[[\s\S]*?\])?>", RegexOptions.None, TimeSpan.FromMilliseconds(100));
+
+		return !docTypeRegex.IsMatch(html) ? $"{docType}\n{html}" : html;
+	}
+}