diff --git a/css/backoffice/vendors/_jquery-multiselect.scss b/css/backoffice/vendors/_jquery-multiselect.scss
index 450909cf4..9abd3d4df 100644
--- a/css/backoffice/vendors/_jquery-multiselect.scss
+++ b/css/backoffice/vendors/_jquery-multiselect.scss
@@ -135,27 +135,3 @@ button.ui-multiselect .fas{
   float:right;
   padding-left:10px;
 }
-
-/**for multiselect in 3.0*/
-.ui-dialog-titlebar.ui-multiselect-header {
-  padding-left: 20px;
-  padding-right: 20px;
-}
-.ui-dialog-titlebar.ui-multiselect-header ul {
-  padding-left: 0px;
-  width:100%;
-}
-.ui-dialog-titlebar.ui-multiselect-header a{
-  color:$ibo-color-grey-900;
-  font-weight:normal;
-}
-.ui-multiselect, .ui-multiselect-menu, .ui-multiselect-header{
-  background-color: $ibo-color-grey-100;
-}
-button.ui-multiselect {
-  padding-right:10px !important;
-}
-button.ui-multiselect .fas{
-  float:right;
-  padding-left:10px;
-}
\ No newline at end of file