diff --git a/mod/quiz/styles.css b/mod/quiz/styles.css
index 37316e7148e..f8bbf1c4429 100644
--- a/mod/quiz/styles.css
+++ b/mod/quiz/styles.css
@@ -1130,13 +1130,13 @@ table#categoryquestions {
 
 /* Bulk edit actions */
 
-.selectmultiplecommandbuttons {
+#page-mod-quiz-edit .selectmultiplecommandbuttons {
     margin: 0.6em 0.4em;
 }
 
-.btn-group.selectmultiplecommand,
-.btn-group.selectmultiplecommandbuttons,
-.select-multiple-checkbox {
+#page-mod-quiz-edit .btn-group.selectmultiplecommand,
+#page-mod-quiz-edit .btn-group.selectmultiplecommandbuttons,
+#page-mod-quiz-edit .select-multiple-checkbox {
     display: none;
 }
 
@@ -1199,8 +1199,8 @@ table#categoryquestions {
     padding-left: 3px;
 }
 
-.section .summary .iconsmall,
-.section .activity .iconsmall {
+#page-mod-quiz-edit .section .summary .iconsmall,
+#page-mod-quiz-edit .section .activity .iconsmall {
     float: left;
 }