diff --git a/source/BaselineOfRenoirSt/BaselineOfRenoirSt.class.st b/source/BaselineOfRenoirSt/BaselineOfRenoirSt.class.st
index a7eac1c..9a9776b 100644
--- a/source/BaselineOfRenoirSt/BaselineOfRenoirSt.class.st
+++ b/source/BaselineOfRenoirSt/BaselineOfRenoirSt.class.st
@@ -81,6 +81,6 @@ BaselineOfRenoirSt >> setUpDependencies: spec [
 		project: 'Buoy-Tools' copyFrom: 'Buoy' with: [ spec loads: 'Tools' ].
 
 	spec
-		baseline: 'Seaside3' with: [ spec repository: 'github://SeasideSt/Seaside:v3.3.1/repository' ];
+		baseline: 'Seaside3' with: [ spec repository: 'github://SeasideSt/Seaside:v3.3.3/repository' ];
 		project: 'Seaside3-Javascript' copyFrom: 'Seaside3' with: [ spec loads: 'Javascript' ]
 ]
diff --git a/source/RenoirSt-HTML/ZnUrl.extension.st b/source/RenoirSt-HTML/ZnUrl.extension.st
index 9e25d76..1a84aa0 100644
--- a/source/RenoirSt-HTML/ZnUrl.extension.st
+++ b/source/RenoirSt-HTML/ZnUrl.extension.st
@@ -10,11 +10,11 @@ ZnUrl >> cssContentOn: aStream [
 
 { #category : #'*RenoirSt-HTML' }
 ZnUrl >> cssContentRelativeToStyleSheetOn: aStream [
-	
+
 	aStream nextPutAll: 'url("'.
 	self isAbsolute
-		ifTrue: [ self printOn: aStream ]
-		ifFalse: [ segments do: [ :segment | aStream nextPutAll: segment ] separatedBy: [ aStream nextPut: $/ ] ].
+		then: [ self printOn: aStream ]
+		otherwise: [ segments do: [ :segment | aStream nextPutAll: segment ] separatedBy: [ aStream nextPut: $/ ] ].
 	aStream nextPutAll: '")'
 ]
 
diff --git a/source/RenoirSt-Seaside/WAUrl.extension.st b/source/RenoirSt-Seaside/WAUrl.extension.st
index 2ebeac1..581a68c 100644
--- a/source/RenoirSt-Seaside/WAUrl.extension.st
+++ b/source/RenoirSt-Seaside/WAUrl.extension.st
@@ -4,10 +4,11 @@ Extension { #name : #WAUrl }
 WAUrl >> cssContentOn: aStream [
 
 	aStream nextPutAll: 'url("'.
-	host isNil
-		ifTrue: [ aStream nextPut: $/.
-			self path do: [ :segment | aStream nextPutAll: segment ] separatedBy: [ aStream nextPut: $/ ] ]
-		ifFalse: [ self printOn: aStream ].
+	host
+		ifNil: [ aStream nextPut: $/.
+			self path do: [ :segment | aStream nextPutAll: segment ] separatedBy: [ aStream nextPut: $/ ]
+			]
+		ifNotNil: [ self printOn: aStream ].
 	aStream nextPutAll: '")'
 ]
 
@@ -15,9 +16,9 @@ WAUrl >> cssContentOn: aStream [
 WAUrl >> cssContentRelativeToStyleSheetOn: aStream [
 
 	aStream nextPutAll: 'url("'.
-	host isNil
-		ifTrue: [ self path do: [ :segment | aStream nextPutAll: segment ] separatedBy: [ aStream nextPut: $/ ] ]
-		ifFalse: [ self printOn: aStream ].
+	host
+		ifNil: [ self path do: [ :segment | aStream nextPutAll: segment ] separatedBy: [ aStream nextPut: $/ ] ]
+		ifNotNil: [ self printOn: aStream ].
 	aStream nextPutAll: '")'
 ]
 
diff --git a/source/RenoirSt/CssComment.class.st b/source/RenoirSt/CssComment.class.st
index 0a55b5f..d4532e2 100644
--- a/source/RenoirSt/CssComment.class.st
+++ b/source/RenoirSt/CssComment.class.st
@@ -18,13 +18,13 @@ CssComment class >> for: aCommentText [
 
 { #category : #Printing }
 CssComment >> cssContentOn: aStream [
-	comment notEmpty
-		ifFalse: [ ^ self ].
-	aStream nextPutAll: '/*'.
+
+	[ aStream nextPutAll: '/*'.
 	comment cssContentOn: aStream.
 	aStream
 		nextPutAll: '*/';
 		newLine
+	] unless: comment isEmpty
 ]
 
 { #category : #'initialize-release' }
diff --git a/source/RenoirSt/CssDescendantCombinator.class.st b/source/RenoirSt/CssDescendantCombinator.class.st
index 435fdbb..d246e36 100644
--- a/source/RenoirSt/CssDescendantCombinator.class.st
+++ b/source/RenoirSt/CssDescendantCombinator.class.st
@@ -14,9 +14,9 @@ Class {
 { #category : #'Instance Creation' }
 CssDescendantCombinator class >> between: anAncestorSelector and: aDescendantSelector [
 
-	^ anAncestorSelector isImplicitUniversal
-		ifTrue: [ aDescendantSelector ]
-		ifFalse: [ self new initializeBetween: anAncestorSelector and: aDescendantSelector ]
+	^ [ self new initializeBetween: anAncestorSelector and: aDescendantSelector ]
+		unless: anAncestorSelector isImplicitUniversal
+		inWhichCase: [ aDescendantSelector ]
 ]
 
 { #category : #Printing }
diff --git a/source/RenoirSt/CssExternalFontReference.class.st b/source/RenoirSt/CssExternalFontReference.class.st
index 332c6b8..d911865 100644
--- a/source/RenoirSt/CssExternalFontReference.class.st
+++ b/source/RenoirSt/CssExternalFontReference.class.st
@@ -33,15 +33,16 @@ CssExternalFontReference class >> svgFontLocatedAt: aUrl withId: aString [
 CssExternalFontReference >> cssContentOn: aStream [
 
 	url cssContentOn: aStream.
-	format notEmpty
-		ifTrue: [ aStream
+	format
+		ifNotEmpty: [ aStream
 				space;
 				nextPutAll: 'format(';
 				nextPut: $".
 			format cssContentOn: aStream.
 			aStream
 				nextPut: $";
-				nextPut: $) ]
+				nextPut: $)
+			]
 ]
 
 { #category : #'initialize-release' }
diff --git a/source/RenoirSt/CssIdentifiedColor.class.st b/source/RenoirSt/CssIdentifiedColor.class.st
index 9d37154..941b183 100644
--- a/source/RenoirSt/CssIdentifiedColor.class.st
+++ b/source/RenoirSt/CssIdentifiedColor.class.st
@@ -24,12 +24,12 @@ CssIdentifiedColor class >> expandToExtendedHexaNotation: aString [
 	"If the string is specified in the 3 letters short notation, expand it to six"
 
 	^ aString size = 3
-		ifTrue: [ 
-			'<1s><1s><2s><2s><3s><3s>'
+		then: [ '<1s><1s><2s><2s><3s><3s>'
 				expandMacrosWith: aString first asString
 				with: aString second asString
-				with: aString third asString ]
-		ifFalse: [ aString ]
+				with: aString third asString
+			]
+		otherwise: [ aString ]
 ]
 
 { #category : #'Instance Creation' }
diff --git a/source/RenoirSt/CssLinearPolynomial.class.st b/source/RenoirSt/CssLinearPolynomial.class.st
index b780235..3ea8da8 100644
--- a/source/RenoirSt/CssLinearPolynomial.class.st
+++ b/source/RenoirSt/CssLinearPolynomial.class.st
@@ -47,19 +47,17 @@ CssLinearPolynomial >> cssContentOn: aWriteStream [
 CssLinearPolynomial >> cssDependentCoefficientContentOn: aWriteStream [
 
 	dependentCoefficient abs = 1
-		ifTrue: [ 
-			dependentCoefficient negative
-				ifTrue: [ aWriteStream nextPut: $- ] ]
-		ifFalse: [ dependentCoefficient cssContentOn: aWriteStream ]
+		then: [ dependentCoefficient negative then: [ aWriteStream nextPut: $- ] ]
+		otherwise: [ dependentCoefficient cssContentOn: aWriteStream ]
 ]
 
 { #category : #private }
 CssLinearPolynomial >> cssIndependentCoefficientContentOn: aWriteStream [
-	independentCoefficient isZero
-		ifTrue: [ ^ self ].
-	independentCoefficient positive
-		ifTrue: [ aWriteStream nextPut: $+ ].
-	independentCoefficient cssContentOn: aWriteStream
+
+	[ 
+		independentCoefficient positive then: [ aWriteStream nextPut: $+ ].
+		independentCoefficient cssContentOn: aWriteStream
+	] unless: independentCoefficient isZero
 ]
 
 { #category : #'initialize-release' }
diff --git a/source/RenoirSt/CssObject.class.st b/source/RenoirSt/CssObject.class.st
index 26ea9d5..31e4a8f 100644
--- a/source/RenoirSt/CssObject.class.st
+++ b/source/RenoirSt/CssObject.class.st
@@ -25,8 +25,8 @@ CssObject class >> lookupValue: aNamedConstantOrValue [
 	"Lookup the CSS namespace and the SVG colors namespace, if no named constant is found returns the argument"
 
 	^ (aNamedConstantOrValue isCollection and: [ aNamedConstantOrValue isString not ])
-		ifTrue: [ aNamedConstantOrValue collect: [ :each | self lookupValue: each ] ]
-		ifFalse: [ CssConstants at: aNamedConstantOrValue ifAbsent: [ self lookupColor: aNamedConstantOrValue ] ]
+		then: [ aNamedConstantOrValue collect: [ :each | self lookupValue: each ] ]
+		otherwise: [ CssConstants at: aNamedConstantOrValue ifAbsent: [ self lookupColor: aNamedConstantOrValue ] ]
 ]
 
 { #category : #Printing }