diff --git a/src/Components/Element.php b/src/Components/Element.php
index 9ec8fbf..0a8bd72 100644
--- a/src/Components/Element.php
+++ b/src/Components/Element.php
@@ -40,7 +40,7 @@ abstract class Element
     final public function __construct(
         protected OutputInterface $output,
         protected array|string $content,
-        Styles|null $styles = null
+        Styles $styles = null
     ) {
         $this->styles = $styles ?? new Styles(defaultStyles: static::$defaultStyles);
         $this->styles->setElement($this);
diff --git a/src/Functions.php b/src/Functions.php
index 20cec63..13a6a2c 100644
--- a/src/Functions.php
+++ b/src/Functions.php
@@ -14,7 +14,7 @@
     /**
      * Sets the renderer implementation.
      */
-    function renderUsing(OutputInterface|null $renderer): void
+    function renderUsing(?OutputInterface $renderer): void
     {
         Termwind::renderUsing($renderer);
     }
diff --git a/src/Html/CodeRenderer.php b/src/Html/CodeRenderer.php
index f75898b..475b937 100644
--- a/src/Html/CodeRenderer.php
+++ b/src/Html/CodeRenderer.php
@@ -239,7 +239,7 @@ private function lineNumbers(array $lines, int $markLine): string
         foreach ($lines as $i => $line) {
             $coloredLineNumber = $this->coloredLineNumber(self::LINE_NUMBER, $i, $lineLength);
 
-            if (0 !== $markLine) {
+            if ($markLine !== 0) {
                 $snippet .= ($markLine === $i + 1
                     ? $this->styleToken(self::ACTUAL_LINE_MARK, $mark)
                     : self::NO_MARK
diff --git a/src/Question.php b/src/Question.php
index 289f866..76d3d8e 100644
--- a/src/Question.php
+++ b/src/Question.php
@@ -20,7 +20,7 @@ final class Question
     /**
      * The streamable input to receive the input from the user.
      */
-    private static StreamableInputInterface|null $streamableInput;
+    private static ?StreamableInputInterface $streamableInput;
 
     /**
      * An instance of Symfony's question helper.
@@ -35,7 +35,7 @@ public function __construct(SymfonyQuestionHelper $helper = null)
     /**
      * Sets the streamable input implementation.
      */
-    public static function setStreamableInput(StreamableInputInterface|null $streamableInput): void
+    public static function setStreamableInput(?StreamableInputInterface $streamableInput): void
     {
         self::$streamableInput = $streamableInput ?? new ArgvInput();
     }
diff --git a/src/Termwind.php b/src/Termwind.php
index 0ce1b51..fa11e6e 100644
--- a/src/Termwind.php
+++ b/src/Termwind.php
@@ -18,12 +18,12 @@ final class Termwind
     /**
      * The implementation of the output.
      */
-    private static OutputInterface|null $renderer;
+    private static ?OutputInterface $renderer;
 
     /**
      * Sets the renderer implementation.
      */
-    public static function renderUsing(OutputInterface|null $renderer): void
+    public static function renderUsing(?OutputInterface $renderer): void
     {
         self::$renderer = $renderer ?? new ConsoleOutput();
     }
@@ -287,7 +287,7 @@ public static function getRenderer(): OutputInterface
      * @param  array<int, string|Element>|string  $elements
      * @return array<int, string|Element>
      */
-    private static function prepareElements($elements, string $styles = '', Closure|null $callback = null): array
+    private static function prepareElements($elements, string $styles = '', Closure $callback = null): array
     {
         if ($callback === null) {
             $callback = static fn ($element): string|Element => $element;
diff --git a/src/ValueObjects/Node.php b/src/ValueObjects/Node.php
index 8e388ae..5ef7bcf 100644
--- a/src/ValueObjects/Node.php
+++ b/src/ValueObjects/Node.php
@@ -101,7 +101,7 @@ public function isEmpty(): bool
     /**
      * Gets the previous sibling from the node.
      */
-    public function getPreviousSibling(): static|null
+    public function getPreviousSibling(): ?static
     {
         $node = $this->node;
 
@@ -127,7 +127,7 @@ public function getPreviousSibling(): static|null
     /**
      * Gets the next sibling from the node.
      */
-    public function getNextSibling(): static|null
+    public function getNextSibling(): ?static
     {
         $node = $this->node;