diff --git a/app/code/Magento/Analytics/etc/adminhtml/system.xml b/app/code/Magento/Analytics/etc/adminhtml/system.xml
index 0aba6e4dd00ed..548f55cdb5ff3 100644
--- a/app/code/Magento/Analytics/etc/adminhtml/system.xml
+++ b/app/code/Magento/Analytics/etc/adminhtml/system.xml
@@ -15,7 +15,7 @@
                 <label>Advanced Reporting</label>
                 <comment><![CDATA[This service provides a dynamic suite of reports with rich insights about your business.
                 Your reports can be accessed securely on a personalized dashboard outside of the admin panel by clicking on the
-                "Go to Advanced Reporting" link. </br> For more information, see our <a target="_blank" href="https://magento.com/legal/terms/cloud-terms">
+               "Go to Advanced Reporting" link. <br> For more information, see our <a target="_blank" href="https://magento.com/legal/terms/cloud-terms">
                 terms and conditions</a>.]]></comment>
                 <field id="enabled" translate="label" type="select" sortOrder="10" showInDefault="1">
                     <label>Advanced Reporting Service</label>
@@ -46,7 +46,7 @@
                 <field id="additional_comment" translate="label comment" type="label" sortOrder="40" showInDefault="1">
                     <label><![CDATA[<strong>Get more insights from Magento Business Intelligence</strong>]]></label>
                     <comment><![CDATA[Magento Business Intelligence provides you with a simple and clear path to
-                    becoming more data driven.</br> Learn more about <a target="_blank"
+                                 becoming more data driven.<br> Learn more about <a target="_blank"
                     href="https://dashboard.rjmetrics.com/v2/magento/signup/">Magento BI Essentials and BI Pro</a> tiers.]]></comment>
                     <frontend_model>Magento\Analytics\Block\Adminhtml\System\Config\AdditionalComment</frontend_model>
                 </field>
diff --git a/app/code/Magento/Analytics/i18n/en_US.csv b/app/code/Magento/Analytics/i18n/en_US.csv
index 9e86e8ce072c5..57115dc6a97a3 100644
--- a/app/code/Magento/Analytics/i18n/en_US.csv
+++ b/app/code/Magento/Analytics/i18n/en_US.csv
@@ -36,20 +36,20 @@ Configuration,Configuration
 "BI Essentials","BI Essentials"
 "This service provides a dynamic suite of reports with rich insights about your business.
                 Your reports can be accessed securely on a personalized dashboard outside of the admin panel by clicking on the
-                ""Go to Advanced Reporting"" link. </br> For more information, see our
+              ""Go to Advanced Reporting"" link. <br> For more information, see our
                 <a href=""https://magento.com/legal/terms/privacy"">terms and conditions</a>.
                 ","This service provides a dynamic suite of reports with rich insights about your business.
                 Your reports can be accessed securely on a personalized dashboard outside of the admin panel by clicking on the
-                ""Go to Advanced Reporting"" link. </br> For more information, see our
+               ""Go to Advanced Reporting"" link. <br> For more information, see our
                 <a href=""https://magento.com/legal/terms/privacy"">terms and conditions</a>."
 "Advanced Reporting Service","Advanced Reporting Service"
 Industry,Industry
 "Time of day to send data","Time of day to send data"
 "<strong>Get more insights from Magento Business Intelligence</strong>","<strong>Get more insights from Magento Business Intelligence</strong>"
 "Magento Business Intelligence provides you with a simple and clear path to
-                    becoming more data driven.</br> Learn more about <a target=""_blank""
+                      becoming more data driven.<br> Learn more about <a target=""_blank""
                     href=""https://dashboard.rjmetrics.com/v2/magento/signup/"">BI Essentials</a> tier.","Magento Business Intelligence provides you with a simple and clear path to
-                    becoming more data driven.</br> Learn more about <a target=""_blank""
+                     becoming more data driven.<br> Learn more about <a target=""_blank""
                     href=""https://dashboard.rjmetrics.com/v2/magento/signup/"">BI Essentials</a> tier."
 "Auto Parts","Auto Parts"
 "Baby/Children’s Apparel, Gear and Toys","Baby/Children’s Apparel, Gear and Toys"
diff --git a/app/code/Magento/Customer/Controller/Adminhtml/File/Address/Upload.php b/app/code/Magento/Customer/Controller/Adminhtml/File/Address/Upload.php
index e9034c8050383..e32937853003c 100644
--- a/app/code/Magento/Customer/Controller/Adminhtml/File/Address/Upload.php
+++ b/app/code/Magento/Customer/Controller/Adminhtml/File/Address/Upload.php
@@ -94,7 +94,7 @@ public function execute()
 
             $errors = $fileUploader->validate();
             if (true !== $errors) {
-                $errorMessage = implode('</br>', $errors);
+              $errorMessage = implode('<br>', $errors);
                 throw new LocalizedException(__($errorMessage));
             }
 
diff --git a/app/code/Magento/Customer/Controller/Adminhtml/File/Customer/Upload.php b/app/code/Magento/Customer/Controller/Adminhtml/File/Customer/Upload.php
index 833a0504a8236..75d0cb56e29e3 100644
--- a/app/code/Magento/Customer/Controller/Adminhtml/File/Customer/Upload.php
+++ b/app/code/Magento/Customer/Controller/Adminhtml/File/Customer/Upload.php
@@ -86,7 +86,7 @@ public function execute()
 
             $errors = $fileUploader->validate();
             if (true !== $errors) {
-                $errorMessage = implode('</br>', $errors);
+                     $errorMessage = implode('<br>', $errors);
                 throw new LocalizedException(__($errorMessage));
             }
 
diff --git a/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Address/UploadTest.php b/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Address/UploadTest.php
index 0b263e2d79a64..1c20840e5dbf1 100644
--- a/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Address/UploadTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Address/UploadTest.php
@@ -232,7 +232,7 @@ public function testExecuteWithErrors()
         $resultJson->expects($this->once())
             ->method('setData')
             ->with([
-                'error' => implode('</br>', $errors),
+             'error' => implode('<br>', $errors),
                 'errorcode' => 0,
             ])
             ->willReturnSelf();
diff --git a/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Customer/UploadTest.php b/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Customer/UploadTest.php
index 080ffcf3a5992..c0ea5392595c7 100644
--- a/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Customer/UploadTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/File/Customer/UploadTest.php
@@ -226,7 +226,7 @@ public function testExecuteWithErrors()
         $resultJson->expects($this->once())
             ->method('setData')
             ->with([
-                'error' => implode('</br>', $errors),
+                'error' => implode('<br>', $errors),
                 'errorcode' => 0,
             ])
             ->willReturnSelf();
diff --git a/app/code/Magento/Eav/Model/Attribute/Data/Multiline.php b/app/code/Magento/Eav/Model/Attribute/Data/Multiline.php
index c1a2f9dc925e8..4bb1c091c2fa8 100644
--- a/app/code/Magento/Eav/Model/Attribute/Data/Multiline.php
+++ b/app/code/Magento/Eav/Model/Attribute/Data/Multiline.php
@@ -134,7 +134,7 @@ public function outputValue($format = \Magento\Eav\Model\AttributeDataFactory::O
                 $output = $values;
                 break;
             case \Magento\Eav\Model\AttributeDataFactory::OUTPUT_FORMAT_HTML:
-                $output = implode("<br />", $values);
+              $output = implode("<br/>", $values);
                 break;
             case \Magento\Eav\Model\AttributeDataFactory::OUTPUT_FORMAT_ONELINE:
                 $output = implode(" ", $values);
diff --git a/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml b/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml
index 784e140041004..2b40f5f09fe09 100644
--- a/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml
+++ b/app/code/Magento/ImportExport/view/adminhtml/templates/export/form/after.phtml
@@ -11,7 +11,7 @@
     <legend class="admin__legend">
         <span><?= $block->escapeHtml(__('Entity Attributes')) ?></span>
     </legend>
-    <br />
+    <br/>
     <form id="export_filter_form" action="<?= $block->escapeUrl($block->getUrl('*/*/export')) ?>" method="post">
         <input name="form_key" type="hidden" value="<?= /* @noEscape */ $block->getFormKey() ?>" />
         <div id="export_filter_grid_container"><!-- --></div>
diff --git a/app/code/Magento/MediaGalleryUi/view/adminhtml/web/template/image/image-details.html b/app/code/Magento/MediaGalleryUi/view/adminhtml/web/template/image/image-details.html
index 642da1c80c622..41fde5e47b017 100644
--- a/app/code/Magento/MediaGalleryUi/view/adminhtml/web/template/image/image-details.html
+++ b/app/code/Magento/MediaGalleryUi/view/adminhtml/web/template/image/image-details.html
@@ -33,7 +33,7 @@ <h3 translate="'Details'"></h3>
                         <each args="{ data: value, as: 'item'}">
                           <div class="value">
                             <a attr="href: $parents[1].getFilterUrl(item.link)"
-                               text="$parents[1].getUsedInText(item)"></a><br/>
+                               text="$parents[1].getUsedInText(item)"></a><br>
                           </div>
                         </each>
                       </if>
diff --git a/app/code/Magento/Newsletter/Test/Unit/Block/Adminhtml/Template/Grid/Renderer/SenderTest.php b/app/code/Magento/Newsletter/Test/Unit/Block/Adminhtml/Template/Grid/Renderer/SenderTest.php
index 6a061f8cab89e..1a20b56558585 100644
--- a/app/code/Magento/Newsletter/Test/Unit/Block/Adminhtml/Template/Grid/Renderer/SenderTest.php
+++ b/app/code/Magento/Newsletter/Test/Unit/Block/Adminhtml/Template/Grid/Renderer/SenderTest.php
@@ -85,8 +85,8 @@ public static function rendererDataProvider()
             ],
             [
                 [
-                    'sender' => "<br>'Sender'</br>",
-                    'sender_email' => "<br>'email@example.com'</br>",
+                  'sender' => "'Sender'<br>",
+                    'sender_email' => "'email@example.com'<br>",
                 ],
                 [
                     'sender' => "&lt;br&gt;&#039;Sender&#039;&lt;/br&gt;",
diff --git a/app/code/Magento/ProductVideo/i18n/en_US.csv b/app/code/Magento/ProductVideo/i18n/en_US.csv
index 368a83985ba8a..f190e5de1e5b3 100644
--- a/app/code/Magento/ProductVideo/i18n/en_US.csv
+++ b/app/code/Magento/ProductVideo/i18n/en_US.csv
@@ -6,7 +6,7 @@ Description,Description
 "Hide from Product Page","Hide from Product Page"
 Role,Role
 "YouTube and Vimeo supported.","YouTube and Vimeo supported."
-"Vimeo supported.<br />To add YouTube video, please <a href=""%1"">enter YouTube API Key</a> first.","Vimeo supported.<br />To add YouTube video, please <a href=""%1"">enter YouTube API Key</a> first."
+"Vimeo supported.<br/>To add YouTube video, please <a href=""%1"">enter YouTube API Key</a> first.","Vimeo supported.<br/>To add YouTube video, please <a href=""%1"">enter YouTube API Key</a> first."
 "Protocol isn't allowed","Protocol isn't allowed"
 "Could not get preview image information. Please check your connection and try again.","Could not get preview image information. Please check your connection and try again."
 "Add Video","Add Video"
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Items/AbstractItems.php b/app/code/Magento/Sales/Block/Adminhtml/Items/AbstractItems.php
index 7020835164c2a..51e6a1a3a9845 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Items/AbstractItems.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Items/AbstractItems.php
@@ -255,7 +255,7 @@ public function getPriceDataObject()
      * @param string $separator
      * @return string
      */
-    public function displayPriceAttribute($code, $strong = false, $separator = '<br />')
+  public function displayPriceAttribute($code, $strong = false, $separator = '<br/>')
     {
         if ($code == 'tax_amount' && $this->getOrder()->getRowTaxDisplayPrecision()) {
             return $this->displayRoundedPrices(
@@ -284,7 +284,7 @@ public function displayPriceAttribute($code, $strong = false, $separator = '<br
      * @param string $separator
      * @return string
      */
-    public function displayPrices($basePrice, $price, $strong = false, $separator = '<br />')
+  public function displayPrices($basePrice, $price, $strong = false, $separator = '<br/>')
     {
         return $this->displayRoundedPrices($basePrice, $price, 2, $strong, $separator);
     }
@@ -299,7 +299,7 @@ public function displayPrices($basePrice, $price, $strong = false, $separator =
      * @param string $separator
      * @return string
      */
-    public function displayRoundedPrices($basePrice, $price, $precision = 2, $strong = false, $separator = '<br />')
+     public function displayRoundedPrices($basePrice, $price, $precision = 2, $strong = false, $separator = '<br/>')
     {
         if ($this->getOrder()->isCurrencyDifferent()) {
             $res = '';
diff --git a/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php b/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php
index a05ed2be9c82c..92dd37c6ce0f5 100644
--- a/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php
+++ b/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php
@@ -182,7 +182,7 @@ private function getTemplateVars(Quote $quote, string $message, string $checkout
                 'payment/' . $this->getPaymentMethod($quote) . '/title',
                 $quote
             ),
-            'items' => implode('<br />', $this->getQuoteItems($quote)),
+                'items' => implode('<br/>', $this->getQuoteItems($quote)),
             'total' => $quote->getCurrency()->getStoreCurrencyCode() . ' ' . $quote->getGrandTotal(),
         ];
     }
diff --git a/app/code/Magento/Sales/Observer/Frontend/AddVatRequestParamsOrderComment.php b/app/code/Magento/Sales/Observer/Frontend/AddVatRequestParamsOrderComment.php
index 8195eba96d750..a1d02688b99ce 100644
--- a/app/code/Magento/Sales/Observer/Frontend/AddVatRequestParamsOrderComment.php
+++ b/app/code/Magento/Sales/Observer/Frontend/AddVatRequestParamsOrderComment.php
@@ -56,7 +56,7 @@ public function execute(Observer $observer)
             && !empty($vatRequestDate)
         ) {
             $orderHistoryComment = __('VAT Request Identifier')
-                . ': ' . $vatRequestId . '<br />'
+                    . ': ' . $vatRequestId . '<br/>'
                 . __('VAT Request Date') . ': ' . $vatRequestDate;
             $orderInstance->addStatusHistoryComment($orderHistoryComment, false);
         }
diff --git a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php
index d82b6786f15fb..e5260b4773943 100644
--- a/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php
@@ -213,7 +213,7 @@ public static function tierPriceDataProvider()
             ],
             [
                 [['price' => 100, 'price_qty' => 1], ['price' => 200, 'price_qty' => 2]],
-                '1 with 100% discount each<br />2 with 200% discount each',
+                '1 with 100% discount each<br/>2 with 200% discount each',
                 Type::TYPE_BUNDLE
             ],
             [
@@ -223,7 +223,7 @@ public static function tierPriceDataProvider()
             ],
             [
                 [['price' => 50, 'price_qty' => 2], ['price' => 150, 'price_qty' => 3]],
-                '2 for 50<br />3 for 150',
+                   '2 for 50<br/>3 for 150',
                 Type::TYPE_SIMPLE
             ],
             [0, '', Type::TYPE_SIMPLE]
diff --git a/app/code/Magento/Sales/etc/adminhtml/system.xml b/app/code/Magento/Sales/etc/adminhtml/system.xml
index a51389dd8e473..698e09ed5ca09 100644
--- a/app/code/Magento/Sales/etc/adminhtml/system.xml
+++ b/app/code/Magento/Sales/etc/adminhtml/system.xml
@@ -68,7 +68,7 @@
                     <upload_dir config="system/filesystem/media" scope_info="1">sales/store/logo</upload_dir>
                     <base_url type="media" scope_info="1">sales/store/logo</base_url>
                     <comment>
-                        <![CDATA[Your default logo will be used in PDF and HTML documents.<br />(jpeg, tiff, png) If your pdf image is distorted, try to use larger file-size image.]]>
+                <![CDATA[Your default logo will be used in PDF and HTML documents.<br/>(jpeg, tiff, png) If your pdf image is distorted, try to use larger file-size image.]]>
                     </comment>
                 </field>
                 <field id="logo_html" translate="label comment" type="image" sortOrder="150" showInDefault="1" showInWebsite="1" showInStore="1">
@@ -77,7 +77,7 @@
                     <upload_dir config="system/filesystem/media" scope_info="1">sales/store/logo_html</upload_dir>
                     <base_url type="media" scope_info="1">sales/store/logo_html</base_url>
                     <comment>
-                        <![CDATA[Logo for HTML documents only. If empty, default will be used.<br />(jpeg, gif, png)]]>
+                        <![CDATA[Logo for HTML documents only. If empty, default will be used.<br/>(jpeg, gif, png)]]>
                     </comment>
                 </field>
                 <field id="address" translate="label" type="textarea" sortOrder="200" showInDefault="1" showInWebsite="1" showInStore="1">
diff --git a/app/code/Magento/Sales/view/adminhtml/templates/order/create/items/grid.phtml b/app/code/Magento/Sales/view/adminhtml/templates/order/create/items/grid.phtml
index ada5cb36cdbb0..eb654d5d46c47 100644
--- a/app/code/Magento/Sales/view/adminhtml/templates/order/create/items/grid.phtml
+++ b/app/code/Magento/Sales/view/adminhtml/templates/order/create/items/grid.phtml
@@ -84,7 +84,7 @@ $catalogHelper =$block->getData('catalogHelper');
                             <div class="product-sku-block">
                                 <span><?= $block->escapeHtml(__('SKU')) ?>:</span>
                                 <?= /* @noEscape */ implode(
-                                    '<br />',
+                                  '<br/>',
                                     $catalogHelper->splitSku($block->escapeHtml($_item->getSku()))
                                 ) ?>
                             </div>
diff --git a/app/code/Magento/Tax/view/frontend/templates/order/tax.phtml b/app/code/Magento/Tax/view/frontend/templates/order/tax.phtml
index 6115ed5ee9311..405b7eaa7fc32 100644
--- a/app/code/Magento/Tax/view/frontend/templates/order/tax.phtml
+++ b/app/code/Magento/Tax/view/frontend/templates/order/tax.phtml
@@ -29,7 +29,7 @@
                     <?php if ($percent !== null) : ?>
                         (<?= (float) $percent ?>%)
                     <?php endif; ?>
-                    <br />
+                    <br/>
                 </td>
                 <td <?= /* @noEscape */ $block->getValueProperties() ?> rowspan="1">
                     <?= /* @noEscape */ $_order->formatPrice($amount) ?>
diff --git a/app/code/Magento/Theme/Block/Adminhtml/System/Design/Theme/Edit/Tab/Css.php b/app/code/Magento/Theme/Block/Adminhtml/System/Design/Theme/Edit/Tab/Css.php
index 62103f59bfa95..eadc6d1349763 100644
--- a/app/code/Magento/Theme/Block/Adminhtml/System/Design/Theme/Edit/Tab/Css.php
+++ b/app/code/Magento/Theme/Block/Adminhtml/System/Design/Theme/Edit/Tab/Css.php
@@ -115,7 +115,7 @@ protected function _addThemeCssFieldset()
                 'href'      => $this->getDownloadUrl($fileId, $this->_getCurrentTheme()->getId()),
                 'label'     => $fileId,
                 'title'     => $asset->getPath(),
-                'delimiter' => '<br />',
+               'delimiter' => '<br/>',
             ];
         }
         $themeFieldset->addField(
@@ -260,7 +260,7 @@ protected function _getUploadCssFileNote()
             $messages[] = __('Something is wrong with the file upload settings.');
         }
 
-        return implode('<br />', $messages);
+       return implode('<br/>', $messages);
     }
 
     /**
diff --git a/app/code/Magento/User/i18n/en_US.csv b/app/code/Magento/User/i18n/en_US.csv
index 4919f9aefc300..d46765baa2c3e 100644
--- a/app/code/Magento/User/i18n/en_US.csv
+++ b/app/code/Magento/User/i18n/en_US.csv
@@ -109,8 +109,8 @@ username,username
 Custom,Custom
 All,All
 Resources,Resources
-"Warning!<br>This action will remove this user from already assigned role.<br>Are you sure?","Warning!<br>This action will remove this user from already assigned role.<br>Are you sure?"
-"Warning!<br>This action will remove those users from already assigned roles.<br>Are you sure?","Warning!<br>This action will remove those users from already assigned roles.<br>Are you sure?"
+"Warning!<br>This action will remove this user from already assigned role.<br />Are you sure?","Warning!<br />This action will remove this user from already assigned role.<br />Are you sure?"
+"Warning!<br>This action will remove those users from already assigned roles.<br />Are you sure?","Warning!<br />This action will remove those users from already assigned roles.<br />Are you sure?"
 "New admin user '%user_name' created","New admin user '%user_name' created"
 "Hello,","Hello,"
 "A new admin account was created for %first_name, %last_name using %email.","A new admin account was created for %first_name, %last_name using %email."
diff --git a/app/code/Magento/User/view/adminhtml/templates/role/users.phtml b/app/code/Magento/User/view/adminhtml/templates/role/users.phtml
index a62570d4e8cd7..7f2a2c203f227 100644
--- a/app/code/Magento/User/view/adminhtml/templates/role/users.phtml
+++ b/app/code/Magento/User/view/adminhtml/templates/role/users.phtml
@@ -6,6 +6,6 @@
 ?>
 <fieldset class="fieldset">
     <legend class="legend"><span><?= $block->escapeHtml(__('Role Users')) ?></span></legend>
-    <br />
+  <br/>
     <?= $block->getGridHtml() ?>
 </fieldset>