Issue #2289247 by lauriii, mgifford, sqndr | LewisNyman: Visually hide the...

Issue #2289247 by lauriii, mgifford, sqndr | LewisNyman: Visually hide the table headers on the modules page.

core/modules/system/css/system.admin.css

@@ -47,16 +47,16 @@ small .admin-link:after {
 /**
  * Modules page.
  */
-#system-modules table {
-  table-layout: fixed;
+#system-modules thead > tr {
+  border: 0;
 }
 #system-modules div.incompatible {
   font-weight: bold;
 }
-#system-modules th.checkbox {
+#system-modules td.checkbox {
   width: 4%;
 }
-#system-modules th.name {
+#system-modules td.module {
   width: 25%;
 }
 #system-modules td {
@@ -105,10 +105,10 @@ small .admin-link:after {
 }
 
 @media screen and (max-width: 40em) {
-  #system-modules th.name {
+  #system-modules td.name {
     width: 20%;
   }
-  #system-modules th.description {
+  #system-modules td.description {
     width: 40%;
   }
 }

core/modules/system/src/Form/ModulesListForm.php

@@ -175,9 +175,9 @@ public function buildForm(array $form, array &$form_state) {
         '#open' => TRUE,
         '#theme' => 'system_modules_details',
         '#header' => array(
-          array('data' => '<span class="visually-hidden">' . $this->t('Installed') . '</span>', 'class' => array('checkbox')),
-          array('data' => $this->t('Name'), 'class' => array('name')),
-          array('data' => $this->t('Description'), 'class' => array('description', RESPONSIVE_PRIORITY_LOW)),
+          array('data' => $this->t('Installed'), 'class' => array('checkbox', 'visually-hidden')),
+          array('data' => $this->t('Name'), 'class' => array('name', 'visually-hidden')),
+          array('data' => $this->t('Description'), 'class' => array('description', 'visually-hidden', RESPONSIVE_PRIORITY_LOW)),
         ),
         '#attributes' => array('class' => array('package-listing')),
         // Ensure that the "Core" package comes first.