diff --git a/animation.go b/animation.go
index 2adece7..c35c1f6 100644
--- a/animation.go
+++ b/animation.go
@@ -2,6 +2,7 @@ package rui
 
 import (
 	"fmt"
+	"maps"
 	"math"
 	"strconv"
 	"strings"
@@ -661,7 +662,7 @@ func (animation *animationData) animationCSS(session Session) string {
 	buffer.WriteString(animation.keyFramesName)
 
 	if duration, ok := floatProperty(animation, Duration, session, 1); ok && duration > 0 {
-		buffer.WriteString(fmt.Sprintf(" %gs ", duration))
+		fmt.Fprintf(buffer, " %gs ", duration)
 	} else {
 		buffer.WriteString(" 1s ")
 	}
@@ -669,7 +670,7 @@ func (animation *animationData) animationCSS(session Session) string {
 	buffer.WriteString(timingFunctionCSS(animation, TimingFunction, session))
 
 	if delay, ok := floatProperty(animation, Delay, session, 0); ok && delay > 0 {
-		buffer.WriteString(fmt.Sprintf(" %gs", delay))
+		fmt.Fprintf(buffer, " %gs", delay)
 	} else {
 		buffer.WriteString(" 0s")
 	}
@@ -678,7 +679,7 @@ func (animation *animationData) animationCSS(session Session) string {
 		if iterationCount == 0 {
 			iterationCount = 1
 		}
-		buffer.WriteString(fmt.Sprintf(" %d ", iterationCount))
+		fmt.Fprintf(buffer, " %d ", iterationCount)
 	} else {
 		buffer.WriteString(" infinite ")
 	}
@@ -699,7 +700,7 @@ func (animation *animationData) animationCSS(session Session) string {
 func (animation *animationData) transitionCSS(buffer *strings.Builder, session Session) {
 
 	if duration, ok := floatProperty(animation, Duration, session, 1); ok && duration > 0 {
-		buffer.WriteString(fmt.Sprintf(" %gs ", duration))
+		fmt.Fprintf(buffer, " %gs ", duration)
 	} else {
 		buffer.WriteString(" 1s ")
 	}
@@ -707,7 +708,7 @@ func (animation *animationData) transitionCSS(buffer *strings.Builder, session S
 	buffer.WriteString(timingFunctionCSS(animation, TimingFunction, session))
 
 	if delay, ok := floatProperty(animation, Delay, session, 0); ok && delay > 0 {
-		buffer.WriteString(fmt.Sprintf(" %gs", delay))
+		fmt.Fprintf(buffer, " %gs", delay)
 	}
 }
 
@@ -979,11 +980,10 @@ func (style *viewStyle) Transition(tag PropertyName) AnimationProperty {
 }
 
 func (style *viewStyle) Transitions() map[PropertyName]AnimationProperty {
-	result := map[PropertyName]AnimationProperty{}
-	for tag, animation := range getTransitionProperty(style) {
-		result[tag] = animation
+	if transitions := getTransitionProperty(style); transitions != nil {
+		return maps.Clone(transitions)
 	}
-	return result
+	return map[PropertyName]AnimationProperty{}
 }
 
 func (style *viewStyle) SetTransition(tag PropertyName, animation AnimationProperty) {
diff --git a/canvas.go b/canvas.go
index f537997..653a369 100644
--- a/canvas.go
+++ b/canvas.go
@@ -575,7 +575,7 @@ func (canvas *canvasData) SetLineDash(dash []float64, offset float64) {
 	for _, val := range dash {
 		buffer.WriteRune(lead)
 		lead = ','
-		buffer.WriteString(fmt.Sprintf("%g", val))
+		fmt.Fprintf(buffer, "%g", val))
 	}
 	buffer.WriteRune(']')
 
diff --git a/data.go b/data.go
index ae7f74a..c3cc88f 100644
--- a/data.go
+++ b/data.go
@@ -1,6 +1,7 @@
 package rui
 
 import (
+	"slices"
 	"strings"
 	"unicode"
 )
@@ -321,8 +322,8 @@ func (node *dataNode) ArrayAsParams() []Params {
 func ParseDataText(text string) DataObject {
 
 	if strings.ContainsAny(text, "\r") {
-		text = strings.Replace(text, "\r\n", "\n", -1)
-		text = strings.Replace(text, "\r", "\n", -1)
+		text = strings.ReplaceAll(text, "\r\n", "\n")
+		text = strings.ReplaceAll(text, "\r", "\n")
 	}
 	data := append([]rune(text), rune(0))
 	pos := 0
@@ -518,15 +519,8 @@ func ParseDataText(text string) DataObject {
 		}
 
 		stopSymbol := func(symbol rune) bool {
-			if unicode.IsSpace(symbol) {
-				return true
-			}
-			for _, sym := range []rune{'=', '{', '}', '[', ']', ',', ' ', '\t', '\n', '\'', '"', '`', '/'} {
-				if sym == symbol {
-					return true
-				}
-			}
-			return false
+			return unicode.IsSpace(symbol) ||
+				slices.Contains([]rune{'=', '{', '}', '[', ']', ',', ' ', '\t', '\n', '\'', '"', '`', '/'}, symbol)
 		}
 
 		for pos < size && !stopSymbol(data[pos]) {
diff --git a/dragAndDrop.go b/dragAndDrop.go
index 0c1a006..d24be28 100644
--- a/dragAndDrop.go
+++ b/dragAndDrop.go
@@ -462,13 +462,13 @@ func dragAndDropHtml(view View, buffer *strings.Builder) {
 
 	if f := GetDragImageXOffset(view); f != 0 {
 		buffer.WriteString(` data-drag-image-x="`)
-		buffer.WriteString(fmt.Sprintf("%g", f))
+		fmt.Fprintf(buffer, "%g", f)
 		buffer.WriteString(`" `)
 	}
 
 	if f := GetDragImageYOffset(view); f != 0 {
 		buffer.WriteString(` data-drag-image-y="`)
-		buffer.WriteString(fmt.Sprintf("%g", f))
+		fmt.Fprintf(buffer, "%g", f)
 		buffer.WriteString(`" `)
 	}
 
diff --git a/imageView.go b/imageView.go
index 2be78c5..9411d89 100644
--- a/imageView.go
+++ b/imageView.go
@@ -205,7 +205,7 @@ func imageViewSrcSet(view View, path string) string {
 				buffer.WriteString(", ")
 			}
 			buffer.WriteString(src.path)
-			buffer.WriteString(fmt.Sprintf(" %gx", src.scale))
+			fmt.Fprintf(buffer, " %gx", src.scale)
 		}
 		return buffer.String()
 	}
diff --git a/numberPicker.go b/numberPicker.go
index b7f44c9..da94424 100644
--- a/numberPicker.go
+++ b/numberPicker.go
@@ -244,27 +244,27 @@ func (picker *numberPickerData) htmlProperties(self View, buffer *strings.Builde
 	min, max := GetNumberPickerMinMax(picker)
 	if min != math.Inf(-1) {
 		buffer.WriteString(` min="`)
-		buffer.WriteString(fmt.Sprintf(format, min))
+		fmt.Fprintf(buffer, format, min)
 		buffer.WriteByte('"')
 	}
 
 	if max != math.Inf(1) {
 		buffer.WriteString(` max="`)
-		buffer.WriteString(fmt.Sprintf(format, max))
+		fmt.Fprintf(buffer, format, max)
 		buffer.WriteByte('"')
 	}
 
 	step := GetNumberPickerStep(picker)
 	if step != 0 {
 		buffer.WriteString(` step="`)
-		buffer.WriteString(fmt.Sprintf(format, step))
+		fmt.Fprintf(buffer, format, step)
 		buffer.WriteByte('"')
 	} else {
 		buffer.WriteString(` step="any"`)
 	}
 
 	buffer.WriteString(` value="`)
-	buffer.WriteString(fmt.Sprintf(format, GetNumberPickerValue(picker)))
+	fmt.Fprintf(buffer, format, GetNumberPickerValue(picker))
 	buffer.WriteByte('"')
 
 	buffer.WriteString(` oninput="editViewInputEvent(this)"`)
diff --git a/resizable.go b/resizable.go
index 571fa7e..183c22c 100644
--- a/resizable.go
+++ b/resizable.go
@@ -354,7 +354,7 @@ func (resizable *resizableData) htmlSubviews(self View, buffer *strings.Builder)
 	}
 
 	writePos := func(x1, x2, y1, y2 int) {
-		buffer.WriteString(fmt.Sprintf(` grid-column-start: %d; grid-column-end: %d; grid-row-start: %d;  grid-row-end: %d;"></div>`, x1, x2, y1, y2))
+		fmt.Fprintf(buffer, ` grid-column-start: %d; grid-column-end: %d; grid-row-start: %d;  grid-row-end: %d;"></div>`, x1, x2, y1, y2)
 	}
 	//htmlID := resizable.htmlID()
 
diff --git a/sizeFunc.go b/sizeFunc.go
index 59fb218..b5996cf 100644
--- a/sizeFunc.go
+++ b/sizeFunc.go
@@ -208,7 +208,7 @@ func (data *sizeFuncData) writeString(topFunc string, buffer *strings.Builder) {
 			buffer.WriteString(arg.String())
 
 		case float64:
-			buffer.WriteString(fmt.Sprintf("%g", arg))
+			fmt.Fprintf(buffer, "%g", arg)
 		}
 
 	}
@@ -302,7 +302,7 @@ func (data *sizeFuncData) writeCSS(topFunc string, buffer *strings.Builder, sess
 			buffer.WriteString(arg.String())
 
 		case float64:
-			buffer.WriteString(fmt.Sprintf("%g", arg))
+			fmt.Fprintf(buffer, "%g", arg)
 		}
 
 	}
diff --git a/tableView.go b/tableView.go
index 3fabef2..039ec27 100644
--- a/tableView.go
+++ b/tableView.go
@@ -1270,10 +1270,10 @@ func (table *tableViewData) htmlSubviews(self View, buffer *strings.Builder) {
 							buffer.WriteString(string(value))
 
 						case float32:
-							buffer.WriteString(fmt.Sprintf("%g", float64(value)))
+							fmt.Fprintf(buffer, "%g", float64(value))
 
 						case float64:
-							buffer.WriteString(fmt.Sprintf("%g", value))
+							fmt.Fprintf(buffer, "%g", value)
 
 						case bool:
 							if value {
@@ -1284,7 +1284,7 @@ func (table *tableViewData) htmlSubviews(self View, buffer *strings.Builder) {
 
 						default:
 							if n, ok := isInt(value); ok {
-								buffer.WriteString(fmt.Sprintf("%d", n))
+								fmt.Fprintf(buffer, "%d", n)
 							} else {
 								buffer.WriteString("<Unsupported value>")
 							}
@@ -1537,10 +1537,10 @@ func (table *tableViewData) writeCellHtml(adapter TableAdapter, row, column int,
 		buffer.WriteString(string(value))
 
 	case float32:
-		buffer.WriteString(fmt.Sprintf("%g", float64(value)))
+		fmt.Fprintf(buffer, "%g", float64(value))
 
 	case float64:
-		buffer.WriteString(fmt.Sprintf("%g", value))
+		fmt.Fprintf(buffer, "%g", value)
 
 	case bool:
 		accentColor := Color(0)
@@ -1555,7 +1555,7 @@ func (table *tableViewData) writeCellHtml(adapter TableAdapter, row, column int,
 
 	default:
 		if n, ok := isInt(value); ok {
-			buffer.WriteString(fmt.Sprintf("%d", n))
+			fmt.Fprintf(buffer, "%d", n)
 		} else {
 			buffer.WriteString("<Unsupported value>")
 		}
diff --git a/theme.go b/theme.go
index 8bb5f9e..de11522 100644
--- a/theme.go
+++ b/theme.go
@@ -975,10 +975,10 @@ func (theme *theme) String() string {
 			buffer.WriteString(":landscape")
 		}
 		if maxWidth > 0 {
-			buffer.WriteString(fmt.Sprintf(":width%d", maxWidth))
+			fmt.Fprintf(buffer, ":width%d", maxWidth)
 		}
 		if maxHeight > 0 {
-			buffer.WriteString(fmt.Sprintf(":height%d", maxHeight))
+			fmt.Fprintf(buffer, ":height%d", maxHeight)
 		}
 		buffer.WriteString(" = [\n")
 
@@ -1014,21 +1014,21 @@ func (theme *theme) String() string {
 			}
 
 			if media.MinWidth > 0 {
-				buffer.WriteString(fmt.Sprintf(":width%d-", media.MinWidth))
+				fmt.Fprintf(buffer, ":width%d-", media.MinWidth)
 				if media.MaxWidth > 0 {
 					buffer.WriteString(strconv.Itoa(media.MaxWidth))
 				}
 			} else if media.MaxWidth > 0 {
-				buffer.WriteString(fmt.Sprintf(":width%d", media.MaxWidth))
+				fmt.Fprintf(buffer, ":width%d", media.MaxWidth)
 			}
 
 			if media.MinHeight > 0 {
-				buffer.WriteString(fmt.Sprintf(":height%d-", media.MinHeight))
+				fmt.Fprintf(buffer, ":height%d-", media.MinHeight)
 				if media.MaxHeight > 0 {
 					buffer.WriteString(strconv.Itoa(media.MaxHeight))
 				}
 			} else if media.MaxHeight > 0 {
-				buffer.WriteString(fmt.Sprintf(":height%d", media.MaxHeight))
+				fmt.Fprintf(buffer, ":height%d", media.MaxHeight)
 			}
 
 			buffer.WriteString(" = [\n")
diff --git a/view.go b/view.go
index 44ebe6b..982b806 100644
--- a/view.go
+++ b/view.go
@@ -1066,8 +1066,8 @@ func (view *viewData) htmlProperties(self View, buffer *strings.Builder) {
 	}
 
 	if view.frame.Left != 0 || view.frame.Top != 0 || view.frame.Width != 0 || view.frame.Height != 0 {
-		buffer.WriteString(fmt.Sprintf(` data-left="%g" data-top="%g" data-width="%g" data-height="%g"`,
-			view.frame.Left, view.frame.Top, view.frame.Width, view.frame.Height))
+		fmt.Fprintf(buffer, ` data-left="%g" data-top="%g" data-width="%g" data-height="%g"`,
+			view.frame.Left, view.frame.Top, view.frame.Width, view.frame.Height)
 	}
 }
 
diff --git a/webBridge.go b/webBridge.go
index 9c94a70..d167b7b 100644
--- a/webBridge.go
+++ b/webBridge.go
@@ -190,7 +190,7 @@ func (bridge *webBridge) argToString(arg any) (string, bool) {
 		for _, val := range arg {
 			buffer.WriteRune(lead)
 			lead = ','
-			buffer.WriteString(fmt.Sprintf("%g", val))
+			fmt.Fprintf(buffer, "%g", val)
 		}
 		buffer.WriteRune(']')
 		return buffer.String(), true