diff --git a/core/modules/simpletest/css/simpletest.module.css b/core/modules/simpletest/css/simpletest.module.css
index 71f7eea..b42924f 100644
--- a/core/modules/simpletest/css/simpletest.module.css
+++ b/core/modules/simpletest/css/simpletest.module.css
@@ -1,6 +1,6 @@
 
 /* Test Table */
-#simpletest-form-table th.select-all {
+.simpletest-test-form .select-all {
   width: 1em;
 }
 th.simpletest-test-label {
@@ -22,20 +22,20 @@ th.simpletest-test-label {
 .simpletest-test-description .description {
   margin: 0;
 }
-#simpletest-form-table tr td {
+.simpletest-test-form tr td {
   background-color: white;
   color: #494949;
 }
-#simpletest-form-table tr.simpletest-group td {
+.simpletest-test-form tr.simpletest-group td {
   background-color: #edf5fa;
   color: #494949;
 }
 
-table#simpletest-form-table tr.simpletest-group label {
+.simpletest-test-form tr.simpletest-group label {
   display: inline;
 }
 
-div.message > div.item-list {
+.message > .item-list {
   font-weight: normal;
 }
 
@@ -80,7 +80,7 @@ a.simpletest-collapse {
 a.simpletest-collapse:focus,
 a.simpletest-collapse:hover {
   font-size: 80%;
-  top: 0px;
+  top: 0;
   height: auto;
   width: auto;
   overflow: visible;