diff --git a/Common/3dParty/html/css/src/CNode.cpp b/Common/3dParty/html/css/src/CNode.cpp
index 8073a6266e..2799e375c3 100644
--- a/Common/3dParty/html/css/src/CNode.cpp
+++ b/Common/3dParty/html/css/src/CNode.cpp
@@ -14,6 +14,15 @@ namespace NSCSS
 		return m_wsName.empty() && m_wsClass.empty() && m_wsId.empty() && m_wsStyle.empty();
 	}
 
+	void CNode::Clear()
+	{
+		m_wsName     .clear();
+		m_wsClass    .clear();
+		m_wsId       .clear();
+		m_wsStyle    .clear();
+		m_mAttributes.clear();
+	}
+
 	std::vector<std::wstring> CNode::GetData() const
 	{
 		std::vector<std::wstring> arValues;
diff --git a/Common/3dParty/html/css/src/CNode.h b/Common/3dParty/html/css/src/CNode.h
index 57409a67a5..d8f6d8e4f0 100644
--- a/Common/3dParty/html/css/src/CNode.h
+++ b/Common/3dParty/html/css/src/CNode.h
@@ -22,6 +22,8 @@ namespace NSCSS
 
 		bool Empty() const;
 
+		void Clear();
+
 		std::vector<std::wstring> GetData() const;
 		bool operator< (const CNode& oNode) const;
 		bool operator== (const CNode& oNode) const;
diff --git a/Common/3dParty/html/css/src/ConstValues.cpp b/Common/3dParty/html/css/src/ConstValues.cpp
index 56f1b28f79..b654ee9206 100644
--- a/Common/3dParty/html/css/src/ConstValues.cpp
+++ b/Common/3dParty/html/css/src/ConstValues.cpp
@@ -7,12 +7,18 @@ namespace NSCSS
 		return sValue < oStatistickElement.sValue;
 	}
 
+	void CTree::Clear()
+	{
+		m_arrChild.clear();
+		m_oNode.Clear();
+	}
+
 	void CTree::CountingNumberRepetitions(const CTree &oTree, std::map<StatistickElement, unsigned int> &mStatictics)
 	{
 		if (!oTree.m_oNode.m_wsId.empty())
 			++mStatictics[StatistickElement{StatistickElement::IsId, L'#' + oTree.m_oNode.m_wsId}];
-                if (!oTree.m_oNode.m_wsStyle.empty())
-                    ++mStatictics[StatistickElement{StatistickElement::IsStyle, oTree.m_oNode.m_wsStyle}];
+				if (!oTree.m_oNode.m_wsStyle.empty())
+					++mStatictics[StatistickElement{StatistickElement::IsStyle, oTree.m_oNode.m_wsStyle}];
 
 		if (!oTree.m_arrChild.empty())
 			for (const CTree& oChildren : oTree.m_arrChild)
diff --git a/Common/3dParty/html/css/src/ConstValues.h b/Common/3dParty/html/css/src/ConstValues.h
index 4e7f8ab9fe..2bc546b54d 100644
--- a/Common/3dParty/html/css/src/ConstValues.h
+++ b/Common/3dParty/html/css/src/ConstValues.h
@@ -33,6 +33,8 @@ namespace NSCSS
 		NSCSS::CNode m_oNode;
 		std::vector<CTree> m_arrChild;
 
+		void Clear();
+
 		static void CountingNumberRepetitions(const CTree &oTree, std::map<StatistickElement, unsigned int> &mStatictics);
 	};
 
diff --git a/Common/3dParty/html/css/src/StyleProperties.cpp b/Common/3dParty/html/css/src/StyleProperties.cpp
index 4874c22a7a..52fb291a10 100644
--- a/Common/3dParty/html/css/src/StyleProperties.cpp
+++ b/Common/3dParty/html/css/src/StyleProperties.cpp
@@ -614,11 +614,11 @@ namespace NSCSS
 	
 	void CColor::SetHEX(const std::wstring &wsValue)
 	{
-		Clear();
-
 		if (6 != wsValue.length() && 3 != wsValue.length())
 			return;
 
+		Clear();
+
 		if (6 == wsValue.length())
 			m_oValue = new std::wstring(wsValue);
 		else
@@ -632,8 +632,6 @@ namespace NSCSS
 	
 	void CColor::SetUrl(const std::wstring &wsValue)
 	{
-		Clear();
-
 		if (wsValue.empty())
 			return;
 
@@ -648,6 +646,8 @@ namespace NSCSS
 			return;
 		}
 
+		Clear();
+
 		m_oValue = pURL;
 		m_enType = ColorUrl;
 	}
@@ -659,6 +659,16 @@ namespace NSCSS
 		m_enType = ColorNone;
 	}
 
+	char NormalizeNegativeColorValue(INT nValue)
+	{
+		if (nValue > 255)
+			return 0xff;
+		else if (nValue < 0)
+			return (char)(std::abs(nValue) % 255);
+
+		return (char)nValue;
+	}
+
 	bool CColor::SetValue(const std::wstring &wsValue, unsigned int unLevel, bool bHardMode)
 	{
 		if ((CHECK_CONDITIONS && !bHardMode) || (wsValue.empty() && unLevel == m_unLevel))
@@ -704,29 +714,18 @@ namespace NSCSS
 			if (3 > arValues.size())
 				return false;
 
-			INT nRed   = std::ceil(NS_STATIC_FUNCTIONS::CalculatePersentage(arValues[0], 255));
-			INT nGreen = std::ceil(NS_STATIC_FUNCTIONS::CalculatePersentage(arValues[1], 255));
-			INT nBlue  = std::ceil(NS_STATIC_FUNCTIONS::CalculatePersentage(arValues[2], 255));
+			const char chRed   = NormalizeNegativeColorValue(std::ceil(NS_STATIC_FUNCTIONS::CalculatePersentage(arValues[0], 255)));
+			const char chGreen = NormalizeNegativeColorValue(std::ceil(NS_STATIC_FUNCTIONS::CalculatePersentage(arValues[1], 255)));
+			const char chBlue  = NormalizeNegativeColorValue(std::ceil(NS_STATIC_FUNCTIONS::CalculatePersentage(arValues[2], 255)));
 
-			if (nRed < 0 || nGreen < 0 || nBlue < 0)
-			{
-				SetEmpty(unLevel);
-				return false;
-			}
-
-			if (255 < nRed)   nRed   = 255;
-			if (255 < nGreen) nGreen = 255;
-			if (255 < nBlue)  nBlue  = 255;
-
-			SetRGB(nRed, nGreen, nBlue);
+			SetRGB(chRed, chGreen, chBlue);
 
 			if (wsNewValue.substr(0, 4) == L"rgba" && 4 == arValues.size())
 				m_oOpacity.SetValue(arValues[3], unLevel, bHardMode);
 
 			bResult = true;
 		}
-
-		if (5 <= wsNewValue.length())
+		else if (5 <= wsNewValue.length())
 		{
 			SetUrl(wsValue);
 
diff --git a/HtmlFile2/htmlfile2.cpp b/HtmlFile2/htmlfile2.cpp
index c53563ecbe..8bd0eb8cb6 100644
--- a/HtmlFile2/htmlfile2.cpp
+++ b/HtmlFile2/htmlfile2.cpp
@@ -4214,6 +4214,7 @@ HRESULT CHtmlFile2::OpenMht(const std::wstring& sSrc, const std::wstring& sDst,
 	m_internal->readStyle();
 
 	m_internal->m_oStylesCalculator.SetBodyTree(m_internal->m_oTree);
+	m_internal->m_oTree.Clear();
 
 	// Переходим в начало
 	if(!m_internal->m_oLightReader.MoveToStart())