diff --git a/src/Link.php b/src/Link.php
index 414136c..3eff0be 100644
--- a/src/Link.php
+++ b/src/Link.php
@@ -62,7 +62,7 @@ public function getUrl(): string
             return $this->url;
         }
 
-        return implode('', $this->prefixes) . '/' . ltrim($this->url, '/');
+        return implode('', $this->prefixes).'/'.ltrim($this->url, '/');
     }
 
     /**
diff --git a/src/Menu.php b/src/Menu.php
index e8e55db..8fe0d96 100644
--- a/src/Menu.php
+++ b/src/Menu.php
@@ -195,7 +195,7 @@ public function submenu($header, $menu = null)
 
         return $this->add($menu->prependIf($header, $header));
     }
-    
+
     /**
      * @param bool $condition
      * @param callable|\Spatie\Menu\Menu|\Spatie\Menu\Item $header
@@ -265,7 +265,7 @@ public function each(callable $callable)
         $type = Reflection::firstParameterType($callable);
 
         foreach ($this->items as $item) {
-            if (!Reflection::itemMatchesType($item, $type)) {
+            if (! Reflection::itemMatchesType($item, $type)) {
                 continue;
             }
 
@@ -301,7 +301,7 @@ protected function applyFilter(callable $filter, Item $item)
     {
         $type = Reflection::firstParameterType($filter);
 
-        if (!Reflection::itemMatchesType($item, $type)) {
+        if (! Reflection::itemMatchesType($item, $type)) {
             return;
         }
 
@@ -484,7 +484,7 @@ public function setActiveFromUrl(string $url, string $root = '/')
         $this->applyToAll(function ($item) use ($requestUrl, $requestRoot) {
 
             // Not using a magic typehint since we need to do two instance checks
-            if (!$item instanceof HasUrl || !$item instanceof Activatable) {
+            if (! $item instanceof HasUrl || ! $item instanceof Activatable) {
                 return;
             }
 
@@ -516,7 +516,7 @@ public function setActiveFromUrl(string $url, string $root = '/')
             // The menu item is active if it's path starts with the request path.
             if (strpos($requestUrl['path'], $url['path']) === 0) {
                 $item->setActive();
-            };
+            }
         });
 
         return $this;
@@ -536,8 +536,7 @@ public function setActiveFromCallable(callable $callable)
         $type = Reflection::firstParameterType($callable);
 
         $this->applyToAll(function (Activatable $item) use ($callable, $type) {
-
-            if (!Reflection::itemMatchesType($item, $type)) {
+            if (! Reflection::itemMatchesType($item, $type)) {
                 return;
             }
 
@@ -665,7 +664,7 @@ public function render(): string
 
         $menu = "{$this->prepend}{$contents}{$this->append}";
 
-        if (!empty($this->wrap)) {
+        if (! empty($this->wrap)) {
             return HtmlElement::render($this->wrap[0], $this->wrap[1], $menu);
         }
 
diff --git a/src/Traits/HtmlAttributes.php b/src/Traits/HtmlAttributes.php
index bbc69f4..98f5de5 100644
--- a/src/Traits/HtmlAttributes.php
+++ b/src/Traits/HtmlAttributes.php
@@ -3,7 +3,6 @@
 namespace Spatie\Menu\Traits;
 
 use Spatie\HtmlElement\Attributes;
-use Spatie\Menu\Helpers\Arr;
 
 trait HtmlAttributes
 {
diff --git a/src/Traits/ParentAttributes.php b/src/Traits/ParentAttributes.php
index 9d01a65..9e87f39 100644
--- a/src/Traits/ParentAttributes.php
+++ b/src/Traits/ParentAttributes.php
@@ -46,7 +46,7 @@ public function setParentAttribute(string $attribute, string $value = '')
     public function setParentAttributes(array $attributes)
     {
         $this->parentAttributes->setAttributes($attributes);
-        
+
         return $this;
     }
 
diff --git a/tests/Items/HtmlTest.php b/tests/Items/HtmlTest.php
index c2ba8b9..5024790 100644
--- a/tests/Items/HtmlTest.php
+++ b/tests/Items/HtmlTest.php
@@ -7,7 +7,7 @@
 class HtmlTest extends \PHPUnit_Framework_TestCase
 {
     /** @test */
-    function it_contains_html()
+    public function it_contains_html()
     {
         $this->assertEquals(
             'Hello world',
@@ -16,7 +16,7 @@ function it_contains_html()
     }
 
     /** @test */
-    function it_can_be_set_active()
+    public function it_can_be_set_active()
     {
         $this->assertTrue(Html::raw('')->setActive()->isActive());
     }
diff --git a/tests/Items/LinkTest.php b/tests/Items/LinkTest.php
index 2d289c7..c7338d3 100644
--- a/tests/Items/LinkTest.php
+++ b/tests/Items/LinkTest.php
@@ -7,7 +7,7 @@
 class LinkTest extends \PHPUnit_Framework_TestCase
 {
     /** @test */
-    function it_contains_text()
+    public function it_contains_text()
     {
         $this->assertEquals(
             'Home',
@@ -16,7 +16,7 @@ function it_contains_text()
     }
 
     /** @test */
-    function it_has_an_url()
+    public function it_has_an_url()
     {
         $this->assertEquals(
             'https://spatie.be',
@@ -25,7 +25,7 @@ function it_has_an_url()
     }
 
     /** @test */
-    function it_can_retrieve_a_segment_from_an_absolute_root_url()
+    public function it_can_retrieve_a_segment_from_an_absolute_root_url()
     {
         $this->assertEquals(
             null,
@@ -34,7 +34,7 @@ function it_can_retrieve_a_segment_from_an_absolute_root_url()
     }
 
     /** @test */
-    function it_can_retrieve_a_segment_from_an_absolute_url()
+    public function it_can_retrieve_a_segment_from_an_absolute_url()
     {
         $this->assertEquals(
             'opensource',
@@ -43,7 +43,7 @@ function it_can_retrieve_a_segment_from_an_absolute_url()
     }
 
     /** @test */
-    function it_can_retrieve_a_segment_from_a_relative_url()
+    public function it_can_retrieve_a_segment_from_a_relative_url()
     {
         $this->assertEquals(
             'opensource',
@@ -52,7 +52,7 @@ function it_can_retrieve_a_segment_from_a_relative_url()
     }
 
     /** @test */
-    function it_can_be_rendered()
+    public function it_can_be_rendered()
     {
         $this->assertEquals(
             '<a href="https://spatie.be">Home</a>',
@@ -61,7 +61,7 @@ function it_can_be_rendered()
     }
 
     /** @test */
-    function it_can_render_classes()
+    public function it_can_render_classes()
     {
         $this->assertEquals(
             '<a href="https://spatie.be" class="home">Home</a>',
@@ -70,7 +70,7 @@ function it_can_render_classes()
     }
 
     /** @test */
-    function it_can_render_attributes()
+    public function it_can_render_attributes()
     {
         $this->assertEquals(
             '<a href="https://spatie.be" data-home-link>Home</a>',
@@ -79,7 +79,7 @@ function it_can_render_attributes()
     }
 
     /** @test */
-    function it_can_prefix_an_url()
+    public function it_can_prefix_an_url()
     {
         $this->assertEquals(
             '/foo/bar',
@@ -88,7 +88,7 @@ function it_can_prefix_an_url()
     }
 
     /** @test */
-    function it_can_prefix_an_url_multiple_times()
+    public function it_can_prefix_an_url_multiple_times()
     {
         $this->assertEquals(
             '/foo/bar/baz',
diff --git a/tests/MenuAddTest.php b/tests/MenuAddTest.php
index e138f98..3cdb390 100644
--- a/tests/MenuAddTest.php
+++ b/tests/MenuAddTest.php
@@ -8,7 +8,7 @@
 class MenuAddTest extends MenuTestCase
 {
     /** @test */
-    function it_starts_as_an_empty_list()
+    public function it_starts_as_an_empty_list()
     {
         $this->menu = Menu::new();
 
@@ -16,7 +16,7 @@ function it_starts_as_an_empty_list()
     }
 
     /** @test */
-    function an_item_can_be_added()
+    public function an_item_can_be_added()
     {
         $this->menu = Menu::new()->add(Link::to('#', 'Hello'));
 
@@ -28,7 +28,7 @@ function an_item_can_be_added()
     }
 
     /** @test */
-    function a_link_can_be_added()
+    public function a_link_can_be_added()
     {
         $this->menu = Menu::new()->link('#', 'Hello');
 
@@ -40,7 +40,7 @@ function a_link_can_be_added()
     }
 
     /** @test */
-    function multiple_items_can_be_added()
+    public function multiple_items_can_be_added()
     {
         $this->menu = Menu::new()
             ->add(Link::to('#', 'Hello'))
@@ -55,7 +55,7 @@ function multiple_items_can_be_added()
     }
 
     /** @test */
-    function it_adds_an_active_class_to_active_items()
+    public function it_adds_an_active_class_to_active_items()
     {
         $this->menu = Menu::new()
             ->add(Link::to('#', 'Hello')->setActive());
@@ -68,7 +68,7 @@ function it_adds_an_active_class_to_active_items()
     }
 
     /** @test */
-    function submenus_can_be_added()
+    public function submenus_can_be_added()
     {
         $this->menu = Menu::new()
             ->add(Menu::new()
@@ -87,7 +87,7 @@ function submenus_can_be_added()
     }
 
     /** @test */
-    function it_adds_active_classes_to_active_submenus()
+    public function it_adds_active_classes_to_active_submenus()
     {
         $this->menu = Menu::new()
             ->add(Menu::new()
@@ -106,7 +106,7 @@ function it_adds_active_classes_to_active_submenus()
     }
 
     /** @test */
-    function it_can_conditionally_add_an_item()
+    public function it_can_conditionally_add_an_item()
     {
         $this->menu = Menu::new()
             ->addIf(true, Link::to('#', 'Foo'))
@@ -120,7 +120,7 @@ function it_can_conditionally_add_an_item()
     }
 
     /** @test */
-    function it_can_conditionally_add_a_link()
+    public function it_can_conditionally_add_a_link()
     {
         $this->menu = Menu::new()
             ->linkIf(true, '#', 'Foo')
@@ -134,7 +134,7 @@ function it_can_conditionally_add_a_link()
     }
 
     /** @test */
-    function it_can_conditionally_add_html()
+    public function it_can_conditionally_add_html()
     {
         $this->menu = Menu::new()
             ->htmlIf(true, 'Foo')
@@ -148,7 +148,7 @@ function it_can_conditionally_add_html()
     }
 
     /** @test */
-    function it_can_add_void_items_with_parent_attributes()
+    public function it_can_add_void_items_with_parent_attributes()
     {
         $this->menu = Menu::new()->void(['role' => 'divider', 'data-divider']);
 
@@ -160,7 +160,7 @@ function it_can_add_void_items_with_parent_attributes()
     }
 
     /** @test */
-    function it_can_conditionally_add_void_items_with_parent_attributes()
+    public function it_can_conditionally_add_void_items_with_parent_attributes()
     {
         $this->menu = Menu::new()
             ->voidIf(true, ['class' => 'divider--a'])
diff --git a/tests/MenuExtraHtmlTest.php b/tests/MenuExtraHtmlTest.php
index 0e5639e..3312847 100644
--- a/tests/MenuExtraHtmlTest.php
+++ b/tests/MenuExtraHtmlTest.php
@@ -8,7 +8,7 @@
 class MenuExtraHtmlTest extends MenuTestCase
 {
     /** @test */
-    function it_can_prepend_content()
+    public function it_can_prepend_content()
     {
         $this->menu = Menu::new()->prepend('<h1>Hi!</h1>');
 
@@ -16,7 +16,7 @@ function it_can_prepend_content()
     }
 
     /** @test */
-    function it_can_append_content()
+    public function it_can_append_content()
     {
         $this->menu = Menu::new()->append('<aside>Bye!</aside>');
 
@@ -24,7 +24,7 @@ function it_can_append_content()
     }
 
     /** @test */
-    function it_renders_classes()
+    public function it_renders_classes()
     {
         $this->menu = Menu::new()->addClass('menu');
 
@@ -32,7 +32,7 @@ function it_renders_classes()
     }
 
     /** @test */
-    function it_renders_attributes()
+    public function it_renders_attributes()
     {
         $this->menu = Menu::new()->setAttribute('data-role', 'navigation');
 
@@ -40,7 +40,7 @@ function it_renders_attributes()
     }
 
     /** @test */
-    function it_renders_attributes_on_the_list_items()
+    public function it_renders_attributes_on_the_list_items()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/foo', 'Foo')->setParentAttribute('data-foo'));
@@ -53,7 +53,7 @@ function it_renders_attributes_on_the_list_items()
     }
 
     /** @test */
-    function it_renders_classes_on_the_list_items()
+    public function it_renders_classes_on_the_list_items()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/foo', 'Foo')->addParentClass('red'));
@@ -66,7 +66,7 @@ function it_renders_classes_on_the_list_items()
     }
 
     /** @test */
-    function it_renders_classes_on_the_list_items_when_they_are_active()
+    public function it_renders_classes_on_the_list_items_when_they_are_active()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/foo', 'Foo')->setActive()->addParentClass('red'));
@@ -79,7 +79,7 @@ function it_renders_classes_on_the_list_items_when_they_are_active()
     }
 
     /** @test */
-    function it_can_be_wrapped_in_an_element()
+    public function it_can_be_wrapped_in_an_element()
     {
         $this->menu = Menu::new()->link('#', 'Foo')->wrap('div');
 
diff --git a/tests/MenuPrefixLinksTest.php b/tests/MenuPrefixLinksTest.php
index 07e5269..ddcf019 100644
--- a/tests/MenuPrefixLinksTest.php
+++ b/tests/MenuPrefixLinksTest.php
@@ -8,7 +8,7 @@
 class MenuPrefixLinksTest extends MenuTestCase
 {
     /** @test */
-    function it_can_prefix_link_urls_after_adding_them()
+    public function it_can_prefix_link_urls_after_adding_them()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/bar', 'Bar'))
@@ -22,7 +22,7 @@ function it_can_prefix_link_urls_after_adding_them()
     }
 
     /** @test */
-    function it_can_prefix_link_urls_before_adding_them()
+    public function it_can_prefix_link_urls_before_adding_them()
     {
         $this->menu = Menu::new()
             ->prefixLinks('/foo')
diff --git a/tests/MenuSetActiveTest.php b/tests/MenuSetActiveTest.php
index 3f45143..0ab7eb7 100644
--- a/tests/MenuSetActiveTest.php
+++ b/tests/MenuSetActiveTest.php
@@ -8,7 +8,7 @@
 class MenuSetActiveTest extends MenuTestCase
 {
     /** @test */
-    function it_can_set_items_active_with_a_callable()
+    public function it_can_set_items_active_with_a_callable()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/', 'Home'))
@@ -26,7 +26,7 @@ function it_can_set_items_active_with_a_callable()
     }
 
     /** @test */
-    function it_can_set_items_active_recursively_through_submenus_with_a_callable()
+    public function it_can_set_items_active_recursively_through_submenus_with_a_callable()
     {
         $this->menu = Menu::new()
             ->add(Menu::new()
@@ -50,7 +50,7 @@ function it_can_set_items_active_recursively_through_submenus_with_a_callable()
     }
 
     /** @test */
-    function it_can_set_items_active_from_an_absolute_url()
+    public function it_can_set_items_active_from_an_absolute_url()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/', 'Home'))
@@ -72,7 +72,7 @@ function it_can_set_items_active_from_an_absolute_url()
     }
 
     /** @test */
-    function it_can_set_items_active_recursively_through_submenus_from_an_absolute_url()
+    public function it_can_set_items_active_recursively_through_submenus_from_an_absolute_url()
     {
         $this->menu = Menu::new()
             ->add(Menu::new()
@@ -100,7 +100,7 @@ function it_can_set_items_active_recursively_through_submenus_from_an_absolute_u
     }
 
     /** @test */
-    function it_can_set_items_active_from_a_relative_url()
+    public function it_can_set_items_active_from_a_relative_url()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/', 'Home'))
@@ -122,7 +122,7 @@ function it_can_set_items_active_from_a_relative_url()
     }
 
     /** @test */
-    function it_doesnt_set_items_active_if_the_paths_match_but_they_have_a_different_domain()
+    public function it_doesnt_set_items_active_if_the_paths_match_but_they_have_a_different_domain()
     {
         $this->menu = Menu::new()
             ->add(Link::to('https://example.com/foo', 'Example Foo'))
@@ -138,7 +138,7 @@ function it_doesnt_set_items_active_if_the_paths_match_but_they_have_a_different
     }
 
     /** @test */
-    function it_doesnt_set_items_active_if_the_paths_match_but_they_have_a_different_subdomain()
+    public function it_doesnt_set_items_active_if_the_paths_match_but_they_have_a_different_subdomain()
     {
         $this->menu = Menu::new()
             ->add(Link::to('https://example.com/foo', 'Example Foo'))
@@ -154,7 +154,7 @@ function it_doesnt_set_items_active_if_the_paths_match_but_they_have_a_different
     }
 
     /** @test */
-    function it_uses_a_request_root_to_ensure_top_level_links_arent_always_active()
+    public function it_uses_a_request_root_to_ensure_top_level_links_arent_always_active()
     {
         $this->menu = Menu::new()
             ->add(Link::to('/nl', 'Home'))
@@ -171,7 +171,7 @@ function it_uses_a_request_root_to_ensure_top_level_links_arent_always_active()
         ');
     }
 
-    function it_can_render_a_custom_active_class()
+    public function it_can_render_a_custom_active_class()
     {
         $this->menu = Menu::new()
             ->setActiveClass('-active')
diff --git a/tests/MenuSubmenuTest.php b/tests/MenuSubmenuTest.php
index 676b0d2..09d94f5 100644
--- a/tests/MenuSubmenuTest.php
+++ b/tests/MenuSubmenuTest.php
@@ -8,7 +8,7 @@
 class MenuSubmenuTest extends MenuTestCase
 {
     /** @test */
-    function it_can_add_a_submenu_with_a_menu()
+    public function it_can_add_a_submenu_with_a_menu()
     {
         $this->menu = Menu::new()->submenu(Menu::new());
 
@@ -16,7 +16,7 @@ function it_can_add_a_submenu_with_a_menu()
     }
 
     /** @test */
-    function it_can_add_a_submenu_with_a_callable_menu()
+    public function it_can_add_a_submenu_with_a_callable_menu()
     {
         $this->menu = Menu::new()->submenu(function (Menu $menu): Menu {
             return $menu;
@@ -32,7 +32,7 @@ function it_can_add_a_submenu_with_a_callable_menu()
     }
 
     /** @test */
-    function it_preserves_filters_with_callable_menus()
+    public function it_preserves_filters_with_callable_menus()
     {
         $this->menu = Menu::new()
             ->prefixLinks('/bar')
@@ -53,7 +53,7 @@ function it_preserves_filters_with_callable_menus()
     }
 
     /** @test */
-    function it_can_add_a_submenu_with_a_string_header()
+    public function it_can_add_a_submenu_with_a_string_header()
     {
         $this->menu = Menu::new()->submenu('Hi', Menu::new());
 
@@ -65,7 +65,7 @@ function it_can_add_a_submenu_with_a_string_header()
     }
 
     /** @test */
-    function it_can_add_a_submenu_with_an_item_header()
+    public function it_can_add_a_submenu_with_an_item_header()
     {
         $this->menu = Menu::new()->submenu(Link::to('#', 'Hi'), Menu::new());
 
@@ -80,7 +80,7 @@ function it_can_add_a_submenu_with_an_item_header()
     }
 
     /** @test */
-    function it_can_conditionally_add_a_submenu()
+    public function it_can_conditionally_add_a_submenu()
     {
         $this->menu = Menu::new()->submenuIf(false, Menu::new());