diff --git a/src/Html2OpenXml/Utilities/Converter.cs b/src/Html2OpenXml/Utilities/Converter.cs
index 4d2290c..96e914f 100755
--- a/src/Html2OpenXml/Utilities/Converter.cs
+++ b/src/Html2OpenXml/Utilities/Converter.cs
@@ -26,9 +26,9 @@ static class Converter
     {
         Span<char> loweredValue = span.Length <= 128 ? stackalloc char[span.Length] : new char[span.Length];
         span.ToLowerInvariant(loweredValue);
-        return loweredValue switch
+        return loweredValue.Trim() switch
         {
-           "left" => JustificationValues.Left,
+            "left" => JustificationValues.Left,
             "right" => JustificationValues.Right,
             "center" => JustificationValues.Center,
             "justify" => JustificationValues.Both,
@@ -43,7 +43,7 @@ static class Converter
     {
         Span<char> loweredValue = span.Length <= 128 ? stackalloc char[span.Length] : new char[span.Length];
         span.ToLowerInvariant(loweredValue);
-        return loweredValue switch
+        return loweredValue.Trim() switch
         {
             "top" => TableVerticalAlignmentValues.Top,
             "middle" => TableVerticalAlignmentValues.Center,
@@ -61,7 +61,7 @@ public static Unit ToFontSize(ReadOnlySpan<char> span)
 
         Span<char> loweredValue = span.Length <= 128 ? stackalloc char[span.Length] : new char[span.Length];
         span.ToLowerInvariant(loweredValue);
-        var unit = loweredValue switch
+        var unit = loweredValue.Trim() switch
         {
             "1" or "xx-small" => new Unit(UnitMetric.Point, 10),
             "2" or "x-small" => new Unit(UnitMetric.Point, 15),
@@ -92,7 +92,7 @@ public static Unit ToFontSize(ReadOnlySpan<char> span)
 
         Span<char> loweredValue = span.Length <= 128 ? stackalloc char[span.Length] : new char[span.Length];
         span.ToLowerInvariant(loweredValue);
-        return loweredValue switch
+        return loweredValue.Trim() switch
         {
             "small-caps" => FontVariant.SmallCaps,
             "normal" => FontVariant.Normal,
@@ -106,7 +106,7 @@ public static Unit ToFontSize(ReadOnlySpan<char> span)
 
         Span<char> loweredValue = span.Length <= 128 ? stackalloc char[span.Length] : new char[span.Length];
         span.ToLowerInvariant(loweredValue);
-        return loweredValue switch
+        return loweredValue.Trim() switch
         {
             "italic" or "oblique" => FontStyle.Italic,
             "normal" => FontStyle.Normal,
@@ -120,7 +120,7 @@ public static Unit ToFontSize(ReadOnlySpan<char> span)
 
         Span<char> loweredValue = span.Length <= 128 ? stackalloc char[span.Length] : new char[span.Length];
         span.ToLowerInvariant(loweredValue);
-        return loweredValue switch
+        return loweredValue.Trim() switch
         {
             "700" or "bold" => FontWeight.Bold,
             "bolder" => FontWeight.Bolder,
@@ -135,8 +135,9 @@ public static Unit ToFontSize(ReadOnlySpan<char> span)
 
         // return the first font name
         Span<Range> tokens = stackalloc Range[1];
-        return span.SplitCompositeAttribute(tokens, ',') switch {
-            1 => span.Slice(tokens[0]).ToString(),
+        return span.SplitCompositeAttribute(tokens, ',') switch
+        {
+            1 => span.Slice(tokens[0]).Trim().ToString(),
             _ => null
         };
     }
@@ -148,7 +149,7 @@ public static BorderValues ToBorderStyle(ReadOnlySpan<char> span)
 
         Span<char> loweredValue = span.Length <= 128 ? stackalloc char[span.Length] : new char[span.Length];
         span.ToLowerInvariant(loweredValue);
-        return loweredValue switch
+        return loweredValue.Trim() switch
         {
             "dotted" => BorderValues.Dotted,
             "dashed" => BorderValues.Dashed,
@@ -177,7 +178,7 @@ public static ICollection<TextDecoration> ToTextDecoration(ReadOnlySpan<char> va
         var tokenCount = span.Split(tokens, ' ', StringSplitOptions.RemoveEmptyEntries);
         for (int i = 0; i < tokenCount; i++)
         {
-            switch (span.Slice(tokens[i]))
+            switch (span.Slice(tokens[i]).Trim())
             {
                 case "underline": decorations.Add(TextDecoration.Underline); break;
                 case "line-through": decorations.Add(TextDecoration.LineThrough); break;
diff --git a/test/HtmlToOpenXml.Tests/ElementTests.cs b/test/HtmlToOpenXml.Tests/ElementTests.cs
index 681f47d..11b8583 100644
--- a/test/HtmlToOpenXml.Tests/ElementTests.cs
+++ b/test/HtmlToOpenXml.Tests/ElementTests.cs
@@ -37,13 +37,13 @@ public void PhrasingTag_ReturnsRunWithDefaultStyle<T> (string html) where T : Op
         public void MultipleStyle_ShouldBeAllApplied ()
         {
             var elements = converter.Parse(@"<b style=""
-font-style:italic;
-font-size:12px;
-font-family:Verdana;
-font-variant:small-caps;
-color:white;
-text-decoration:wavy line-through double;
-background:red;
+font-style: italic;
+font-size: 12px;
+font-family: Verdana;
+font-variant: small-caps;
+color: white;
+text-decoration: wavy line-through double;
+background: red;
 "">bold with italic style</b>");
             Assert.That(elements, Has.Count.EqualTo(1));
 
@@ -67,7 +67,7 @@ public void MultipleStyle_ShouldBeAllApplied ()
             }
         }
 
-        [TestCase("<span style='font-style:normal'><span style='font-style:italic'>Italic!</span></span>")]
+        [TestCase("<span style='font-style: normal'><span style='font-style: italic'>Italic!</span></span>")]
         [TestCase("<div style='font-style:italic'><span style='font-style:normal'><span style='font-style:italic'>Italic!</span></span></div>")]
         [TestCase("<div id='outer' style='font-style:italic'><div id='inner'>Italic</div></div>")]
         public void NestedTagWithStyle_ShouldCascadeParentStyle (string html)