neilime · neilime · Dec 22, 2023 · Dec 6, 2023 · Dec 6, 2023 · Dec 6, 2023
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
@@ -14,9 +14,10 @@ jobs:
     strategy:
       matrix:
         include:
-          - php-versions: "7.4"
           - php-versions: "8.0"
           - php-versions: "8.1"
+          - php-versions: "8.2"
+          - php-versions: "8.3"
             stable: true
 
     runs-on: ubuntu-latest

diff --git a/composer.json b/composer.json
@@ -26,7 +26,7 @@
     "twitter/bootstrap": "Twitter bootstrap assets"
   },
   "require": {
-    "php": "^7.4 || ~8.0.0 || ~8.1.0",
+    "php": "~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0",
     "laminas/laminas-escaper": "^2.9",
     "laminas/laminas-form": "^3.1",
     "laminas/laminas-i18n": "^2.13",
@@ -37,17 +37,17 @@
     "laminas/laminas-view": "^2.16"
   },
   "require-dev": {
-    "laminas/laminas-component-installer": "^2.6",
+    "laminas/laminas-component-installer": "^3.0",
     "laminas/laminas-modulemanager": "^2.11",
     "laminas/laminas-mvc": "^3.3",
     "mikey179/vfsstream": "^1.6",
     "pcov/clobber": "^2.0",
     "phpstan/extension-installer": "^1.1",
-    "phpstan/phpstan": "^0.12",
-    "phpstan/phpstan-phpunit": "^0.12",
+    "phpstan/phpstan": "^1.8",
+    "phpstan/phpstan-phpunit": "^1.3",
     "phpunit/phpunit": "^9.5.11",
-    "slam/phpstan-laminas-framework": "^0.12",
-    "spatie/phpunit-snapshot-assertions": "^4.2",
+    "slam/phpstan-laminas-framework": "^1.0",
+    "spatie/phpunit-snapshot-assertions": "^4.2.13",
     "squizlabs/php_codesniffer": "^3.6"
   },
   "autoload": {
@@ -77,7 +77,11 @@
   },
   "config": {
     "optimize-autoloader": true,
-    "sort-packages": true
+    "sort-packages": true,
+    "allow-plugins": {
+      "laminas/laminas-component-installer": true,
+      "phpstan/extension-installer": true
+    }
   },
   "extra": {
     "branch-alias": {

diff --git a/phpstan.neon b/phpstan.neon
@@ -1,8 +1,7 @@
 parameters:
-    ignoreErrors:
-        - '/Call to an undefined method Laminas\\View\\Helper\\AbstractHelper::/'
+    treatPhpDocTypesAsCertain: false
     laminasframework:
        serviceManagerLoader: tests/phpstan.php
     excludePaths:
         - src/DocumentationGenerator/UsagePage/Prettifier/SourceFile.php
-        - src/DocumentationGenerator/UsagePage/Prettifier/PhpPrettifier.php
+        - src/DocumentationGenerator/UsagePage/Prettifier/PhpPrettifier.php
diff --git a/...estSuite/Documentation/__snapshots__/Components/Alerts/Example/Additional_content__1.html b/...estSuite/Documentation/__snapshots__/Components/Alerts/Example/Additional_content__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="alert alert-success" role="alert">
     <h4 class="alert-heading">Well done!</h4>
     <p>Aww yeah, you successfully read this important alert message. This example text is going to run a bit longer so that you can see how spacing within an alert works with this kind of content.</p>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Alerts/Example/Dismissing__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Alerts/Example/Dismissing__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="alert alert-dismissible alert-warning fade show" role="alert">
     <strong>Holy guacamole!</strong> You should check in on some of those fields below.
     <button aria-label="Close" class="close" data-dismiss="alert" type="button"><span aria-hidden="true">&times;</span></button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Alerts/Example/Link_color__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Alerts/Example/Link_color__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="alert alert-primary" role="alert">
     A simple primary alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Alerts/Example__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Alerts/Example__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="alert alert-primary" role="alert">
     A simple primary alert&mdash;check it out!

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Contextual_variations__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Contextual_variations__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <span class="badge badge-primary">Primary</span>
 <span class="badge badge-secondary">Secondary</span>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Example__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Example__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <h1>Example heading <span class="badge badge-secondary">New</span>
 </h1>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Links__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Links__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <a class="badge badge-primary" href="#">Primary</a>
 <a class="badge badge-secondary" href="#">Secondary</a>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Pill_badges__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Badges/Pill_badges__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <span class="badge badge-pill badge-primary">Primary</span>
 <span class="badge badge-pill badge-secondary">Secondary</span>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Breadcrumb/Example__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Breadcrumb/Example__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <nav aria-label="breadcrumb">
     <ol class="breadcrumb">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Button_group/Basic_example__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Button_group/Basic_example__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div aria-label="Basic example" class="btn-group" role="group">
     <button type="button" name="left" class="btn btn-secondary" value="">Left</button>
     <button type="button" name="middle" class="btn btn-secondary" value="">Middle</button>

diff --git a/..._snapshots__/Components/Button_group/Button_toolbar/Combine_sets_of_button_groups__1.html b/..._snapshots__/Components/Button_group/Button_toolbar/Combine_sets_of_button_groups__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div aria-label="Toolbar with button groups" class="btn-toolbar" role="toolbar">
     <div aria-label="First group" class="btn-group mr-2" role="group">
         <button type="button" name="1" class="btn btn-secondary" value="">1</button>

diff --git a/...hots__/Components/Button_group/Button_toolbar/Mix_input_groups_with_button_groups__1.html b/...hots__/Components/Button_group/Button_toolbar/Mix_input_groups_with_button_groups__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div aria-label="Toolbar with button groups" class="btn-toolbar mb-3" role="toolbar">
     <div aria-label="First group" class="btn-group mr-2" role="group">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Button_group/Nesting__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Button_group/Nesting__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div aria-label="Button group with nested dropdown" class="btn-group" role="group">
     <button type="button" name="1" class="btn btn-secondary" value="">1</button>
     <button type="button" name="2" class="btn btn-secondary" value="">2</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Button_group/Sizing__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Button_group/Sizing__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div aria-label="..." class="btn-group btn-group-lg" role="group">
     <button type="button" name="left" class="btn btn-secondary" value="">Left</button>

diff --git a/.../TestSuite/Documentation/__snapshots__/Components/Button_group/Vertical_variation__1.html b/.../TestSuite/Documentation/__snapshots__/Components/Button_group/Vertical_variation__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="btn-group-vertical">
     <button type="button" name="button" class="btn btn-secondary" value="">Button</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Button_tags__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Button_tags__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <a href="#" class="btn btn-primary" role="button">Link</a>
 <button type="submit" name="Button" class="btn btn-primary" value="">Button</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Example__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Example__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <button type="button" name="primary" class="btn btn-primary" value="">Primary</button>
 <button type="button" name="secondary" class="btn btn-secondary" value="">Secondary</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Outline_buttons__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Outline_buttons__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <button type="button" name="primary" class="btn btn-outline-primary" value="">Primary</button>
 <button type="button" name="secondary" class="btn btn-outline-secondary" value="">Secondary</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Sizes__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Buttons/Sizes__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <button type="button" name="large-button" class="btn btn-lg btn-primary" value="">Large button</button>
 <button type="button" name="large-button" class="btn btn-lg btn-secondary" value="">Large button</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_layout/Card_columns__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_layout/Card_columns__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="card-columns">
     <div class="card">
         <img alt="..." class="card-img-top" src="/twbs-helper-module/img/docs/image-cap.svg">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_layout/Card_decks__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_layout/Card_decks__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card-deck">
     <div class="card">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_layout/Card_groups__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_layout/Card_groups__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card-group">
     <div class="card">

diff --git a/...uite/Documentation/__snapshots__/Components/Card/Card_styles/Background_and_color__1.html b/...uite/Documentation/__snapshots__/Components/Card/Card_styles/Background_and_color__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="bg-primary card mb-3 text-white">
     <div class="card-header">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_styles/Border__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Card_styles/Border__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="border-primary card mb-3">
     <div class="card-header">

diff --git a/...estSuite/Documentation/__snapshots__/Components/Card/Card_styles/Mixins_utilities__1.html b/...estSuite/Documentation/__snapshots__/Components/Card/Card_styles/Mixins_utilities__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="border-success card mb-3">
     <div class="bg-transparent border-success card-header">
         Header

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Content_types/Body__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Content_types/Body__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="card">
     <div class="card-body">
         This is some text within a card body.

diff --git a/...Suite/Documentation/__snapshots__/Components/Card/Content_types/Header_and_footer__1.html b/...Suite/Documentation/__snapshots__/Components/Card/Content_types/Header_and_footer__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card">
     <div class="card-header">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Content_types/Images__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Content_types/Images__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="card" style="width: 18rem;">
     <img alt="..." class="card-img-top" src="/twbs-helper-module/img/docs/image-cap.svg">
     <div class="card-body">

diff --git a/.../TestSuite/Documentation/__snapshots__/Components/Card/Content_types/Kitchen_sink__1.html b/.../TestSuite/Documentation/__snapshots__/Components/Card/Content_types/Kitchen_sink__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="card" style="width: 18rem;">
     <img alt="..." class="card-img-top" src="/twbs-helper-module/img/docs/image-cap.svg">
     <div class="card-body">

diff --git a/...s/TestSuite/Documentation/__snapshots__/Components/Card/Content_types/List_groups__1.html b/...s/TestSuite/Documentation/__snapshots__/Components/Card/Content_types/List_groups__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card" style="width: 18rem;">
     <ul class="list-group list-group-flush">

diff --git a/...e/Documentation/__snapshots__/Components/Card/Content_types/Titles_text_and_links__1.html b/...e/Documentation/__snapshots__/Components/Card/Content_types/Titles_text_and_links__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="card" style="width: 18rem;">
     <div class="card-body">
         <h5 class="card-title">Card title</h5>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Example__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Example__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="card" style="width: 18rem;">
     <img alt="..." class="card-img-top" src="/twbs-helper-module/img/docs/image-cap.svg">
     <div class="card-body">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Images/Image_caps__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Images/Image_caps__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card mb-3">
     <img alt="..." class="card-img-top" src="/twbs-helper-module/img/docs/image-cap.svg">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Images/Image_overlays__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Images/Image_overlays__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="bg-dark card text-white">
     <img alt="..." class="card-img" src="/twbs-helper-module/img/docs/image-cap.svg">
     <div class="card-img-overlay">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Navigation__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Navigation__1.html
@@ -1,10 +1,9 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card text-center">
     <div class="card-header">
         <ul class="card-header-tabs nav nav-tabs">
             <li class=" nav-item">
-                <a class="nav-link active" href="#">Active</a>
+                <a class="nav-link active" href="#" aria-current="page">Active</a>
             </li>
             <li class="nav-item">
                 <a class="nav-link" href="#">Link</a>
@@ -28,7 +27,7 @@ <h5 class="card-title">Special title treatment</h5>
     <div class="card-header">
         <ul class="card-header-pills nav nav-pills">
             <li class=" nav-item">
-                <a class="nav-link active" href="#">Active</a>
+                <a class="nav-link active" href="#" aria-current="page">Active</a>
             </li>
             <li class="nav-item">
                 <a class="nav-link" href="#">Link</a>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Sizing/Using_custom_CSS__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Sizing/Using_custom_CSS__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="card" style="width: 18rem;">
     <div class="card-body">
         <h5 class="card-title">Special title treatment</h5>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Sizing/Using_utilities__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Sizing/Using_utilities__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card w-75">
     <div class="card-body">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Card/Text_alignment__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Card/Text_alignment__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="card" style="width: 18rem;">
     <div class="card-body">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/Crossfade__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/Crossfade__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="carousel carousel-fade slide" data-ride="carousel" id="carouselExampleFade">
     <div class="carousel-inner">
         <div class="active carousel-item">

diff --git a/...ation/__snapshots__/Components/Carousel/Example/Individual_carousel-item_interval__1.html b/...ation/__snapshots__/Components/Carousel/Example/Individual_carousel-item_interval__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="carousel slide" data-ride="carousel" id="carouselExampleControls">
     <div class="carousel-inner">
         <div class="active carousel-item" data-interval="10000">

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/Slides_only__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/Slides_only__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="carousel slide" data-ride="carousel" id="carouselExampleSlidesOnly">
     <div class="carousel-inner">
         <div class="active carousel-item">

diff --git a/...s/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/With_captions__1.html b/...s/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/With_captions__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="carousel slide" data-ride="carousel" id="carouselExampleCaptions">
     <ol class="carousel-indicators">
         <li class="active" data-slide-to="0" data-target="#carouselExampleCaptions">

diff --git a/...s/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/With_controls__1.html b/...s/TestSuite/Documentation/__snapshots__/Components/Carousel/Example/With_controls__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="carousel slide" data-ride="carousel" id="carouselExampleControls">
     <div class="carousel-inner">
         <div class="active carousel-item">

diff --git a/...TestSuite/Documentation/__snapshots__/Components/Carousel/Example/With_indicators__1.html b/...TestSuite/Documentation/__snapshots__/Components/Carousel/Example/With_indicators__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="carousel slide" data-ride="carousel" id="carouselExampleIndicators">
     <ol class="carousel-indicators">
         <li class="active" data-slide-to="0" data-target="#carouselExampleIndicators">

diff --git a/...s/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Directions/Dropright__1.html b/...s/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Directions/Dropright__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="btn-group dropright">
     <button type="button" name="dropright" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" class="btn btn-lg btn-secondary dropdown-toggle" value="">Dropright</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Directions/Dropup__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Directions/Dropup__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="btn-group dropup">
     <button type="button" name="dropup" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" class="btn btn-lg btn-secondary dropdown-toggle" value="">Dropup</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Dropdown_options__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Dropdown_options__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="d-flex">
 <div class="dropdown mr-1">
     <button type="button" name="dropdown" id="dropdownMenuOffset" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" data-offset="10,20" class="btn btn-secondary dropdown-toggle" value="">Offset</button>

diff --git a/...TestSuite/Documentation/__snapshots__/Components/Dropdowns/Examples/Single_button__1.html b/...TestSuite/Documentation/__snapshots__/Components/Dropdowns/Examples/Single_button__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="dropdown">
     <button type="button" name="dropdown" id="dropdownMenuButton" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" class="btn btn-secondary dropdown-toggle" value="">Dropdown</button>

diff --git a/.../TestSuite/Documentation/__snapshots__/Components/Dropdowns/Examples/Split_button__1.html b/.../TestSuite/Documentation/__snapshots__/Components/Dropdowns/Examples/Split_button__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="btn-group dropdown">
     <button type="button" name="dropdown" class="btn btn-primary" value="">Dropdown</button>

diff --git a/...umentation/__snapshots__/Components/Dropdowns/Menu_alignment/Responsive_alignment__1.html b/...umentation/__snapshots__/Components/Dropdowns/Menu_alignment/Responsive_alignment__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body>
 <div class="dropdown">
     <button type="button" name="dropdown" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" class="btn btn-secondary dropdown-toggle" value="">Left-aligned but right aligned when large screen</button>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_alignment__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_alignment__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="dropdown">
     <button type="button" name="dropdown" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" class="btn btn-secondary dropdown-toggle" value="">Right-aligned menu</button>
     <div class="dropdown-menu dropdown-menu-right">

diff --git a/.../TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Dividers__1.html b/.../TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Dividers__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="dropdown-menu">
     <a class="dropdown-item" href="#">Action</a>
     <a class="dropdown-item" href="#">Another action</a>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Forms__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Forms__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="dropdown-menu">
     <form action="" method="POST" name="dropdown" id="dropdown" role="form">
         <div class="form-group">

diff --git a/...s/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Headers__1.html b/...s/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Headers__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="dropdown-menu">
     <h6 class="dropdown-header">Dropdown header</h6>
     <a class="dropdown-item" href="#">Action</a>

diff --git a/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Text__1.html b/tests/TestSuite/Documentation/__snapshots__/Components/Dropdowns/Menu_content/Text__1.html
@@ -1,4 +1,3 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
 <?xml encoding="utf-8" ?><html><body><div class="dropdown-menu p-4 text-muted" style="max-width: 200px;">
     <p>Some example text that's free-flowing within the dropdown menu.</p>
     <p class="mb-0">And this is more example text.</p>