diff --git a/core/modules/simpletest/simpletest.admin.css b/core/modules/simpletest/simpletest.admin.css
new file mode 100644
index 0000000..6566413
--- /dev/null
+++ b/core/modules/simpletest/simpletest.admin.css
@@ -0,0 +1,85 @@
+
+/* Test Table */
+.simpletest-test-form th.select-all {
+  width: 1em;
+}
+th.simpletest_test {
+  width: 16em;
+}
+
+.simpletest-image {
+  display: inline-block;
+  cursor: pointer;
+  width: 1em;
+}
+label.simpletest-group-label {
+  display: inline;
+  font-weight: bold;
+}
+.simpletest-test-label label {
+  margin-left: 1em; /* LTR */
+}
+.simpletest-test-description .description {
+  margin: 0;
+}
+.simpletest-test-form td {
+  background-color: white;
+  color: #494949;
+}
+tr.simpletest-group td {
+  background-color: #edf5fa;
+  color: #494949;
+}
+
+.message > .item-list {
+  font-weight: normal;
+}
+
+div.simpletest-pass {
+  color: #33a333;
+}
+.simpletest-fail {
+  color: #981010;
+}
+
+tr.simpletest-pass.odd {
+  background-color: #b6ffb6;
+}
+tr.simpletest-pass.even {
+  background-color: #9bff9b;
+}
+tr.simpletest-fail.odd {
+  background-color: #ffc9c9;
+}
+tr.simpletest-fail.even {
+  background-color: #ffacac;
+}
+tr.simpletest-exception.odd {
+  background-color: #f4ea71;
+}
+tr.simpletest-exception.even {
+  background-color: #f5e742;
+}
+tr.simpletest-debug.odd {
+  background-color: #eee;
+}
+tr.simpletest-debug.even {
+  background-color: #fff;
+}
+
+a.simpletest-collapse {
+  height: 0;
+  width: 0;
+  top: -99em;
+  position: absolute;
+}
+a.simpletest-collapse:focus,
+a.simpletest-collapse:hover {
+  font-size: 80%;
+  top: 0px;
+  height: auto;
+  width: auto;
+  overflow: visible;
+  position: relative;
+  z-index: 1000;
+}
diff --git a/core/modules/simpletest/simpletest.css b/core/modules/simpletest/simpletest.css
deleted file mode 100644
index 86bd04b..0000000
--- a/core/modules/simpletest/simpletest.css
+++ /dev/null
@@ -1,89 +0,0 @@
-
-/* Test Table */
-#simpletest-form-table th.select-all {
-  width: 1em;
-}
-th.simpletest_test {
-  width: 16em;
-}
-
-.simpletest-image {
-  display: inline-block;
-  cursor: pointer;
-  width: 1em;
-}
-.simpletest-group-label label {
-  display: inline;
-  font-weight: bold;
-}
-.simpletest-test-label label {
-  margin-left: 1em; /* LTR */
-}
-.simpletest-test-description .description {
-  margin: 0;
-}
-#simpletest-form-table tr td {
-  background-color: white;
-  color: #494949;
-}
-#simpletest-form-table tr.simpletest-group td {
-  background-color: #edf5fa;
-  color: #494949;
-}
-
-table#simpletest-form-table tr.simpletest-group label {
-  display: inline;
-}
-
-div.message > div.item-list {
-  font-weight: normal;
-}
-
-div.simpletest-pass {
-  color: #33a333;
-}
-.simpletest-fail {
-  color: #981010;
-}
-
-tr.simpletest-pass.odd {
-  background-color: #b6ffb6;
-}
-tr.simpletest-pass.even {
-  background-color: #9bff9b;
-}
-tr.simpletest-fail.odd {
-  background-color: #ffc9c9;
-}
-tr.simpletest-fail.even {
-  background-color: #ffacac;
-}
-tr.simpletest-exception.odd {
-  background-color: #f4ea71;
-}
-tr.simpletest-exception.even {
-  background-color: #f5e742;
-}
-tr.simpletest-debug.odd {
-  background-color: #eee;
-}
-tr.simpletest-debug.even {
-  background-color: #fff;
-}
-
-a.simpletest-collapse {
-  height: 0;
-  width: 0;
-  top: -99em;
-  position: absolute;
-}
-a.simpletest-collapse:focus,
-a.simpletest-collapse:hover {
-  font-size: 80%;
-  top: 0px;
-  height: auto;
-  width: auto;
-  overflow: visible;
-  position: relative;
-  z-index: 1000;
-}
diff --git a/core/modules/simpletest/simpletest.module b/core/modules/simpletest/simpletest.module
index b21c64c..920f6fb 100644
--- a/core/modules/simpletest/simpletest.module
+++ b/core/modules/simpletest/simpletest.module
@@ -145,7 +145,7 @@ function simpletest_run_tests($test_list, $reporter = 'drupal') {
     ),
     'finished' => '_simpletest_batch_finished',
     'progress_message' => '',
-    'css' => array(drupal_get_path('module', 'simpletest') . '/simpletest.css'),
+    'css' => array(drupal_get_path('module', 'simpletest') . '/simpletest.admin.css'),
     'init_message' => t('Processing test @num of @max - %test.', array('%test' => $info['name'], '@num' => '1', '@max' => count($test_list))),
   );
   batch_set($batch);
diff --git a/core/modules/simpletest/simpletest.pages.inc b/core/modules/simpletest/simpletest.pages.inc
index 8ac1ee2..e373ff3 100644
--- a/core/modules/simpletest/simpletest.pages.inc
+++ b/core/modules/simpletest/simpletest.pages.inc
@@ -68,7 +68,7 @@ function simpletest_test_form($form) {
 function theme_simpletest_test_table($variables) {
   $table = $variables['table'];
 
-  drupal_add_css(drupal_get_path('module', 'simpletest') . '/simpletest.css');
+  drupal_add_css(drupal_get_path('module', 'simpletest') . '/simpletest.admin.css');
   drupal_add_js(drupal_get_path('module', 'simpletest') . '/simpletest.js');
   drupal_add_js('core/misc/tableselect.js');
 
@@ -212,7 +212,7 @@ function simpletest_result_form($form, &$form_state, $test_id) {
   }
 
   // Load all classes and include CSS.
-  drupal_add_css(drupal_get_path('module', 'simpletest') . '/simpletest.css');
+  drupal_add_css(drupal_get_path('module', 'simpletest') . '/simpletest.admin.css');
 
   // Keep track of which test cases passed or failed.
   $filter = array(