diff --git a/core/modules/simpletest/css/simpletest.module.css b/core/modules/simpletest/css/simpletest.module.css
index 71f7eea..4d74468 100644
--- a/core/modules/simpletest/css/simpletest.module.css
+++ b/core/modules/simpletest/css/simpletest.module.css
@@ -46,25 +46,25 @@ div.simpletest-pass {
   color: #981010;
 }
 
-tr.simpletest-pass.odd {
+tr.simpletest-pass {
   background-color: #b6ffb6;
 }
 tr.simpletest-pass.even {
   background-color: #9bff9b;
 }
-tr.simpletest-fail.odd {
+tr.simpletest-fail {
   background-color: #ffc9c9;
 }
 tr.simpletest-fail.even {
   background-color: #ffacac;
 }
-tr.simpletest-exception.odd {
+tr.simpletest-exception {
   background-color: #f4ea71;
 }
 tr.simpletest-exception.even {
   background-color: #f5e742;
 }
-tr.simpletest-debug.odd {
+tr.simpletest-debug {
   background-color: #eee;
 }
 tr.simpletest-debug.even {