Index: lams_gradebook/web/includes/css/gradebook.scss
===================================================================
diff -u -r6e5015d036550bcae770b2125000995c79c3dea2 -r7e71d3c117c81dda7bed5a8bfb1f3e01adc3c104
--- lams_gradebook/web/includes/css/gradebook.scss	(.../gradebook.scss)	(revision 6e5015d036550bcae770b2125000995c79c3dea2)
+++ lams_gradebook/web/includes/css/gradebook.scss	(.../gradebook.scss)	(revision 7e71d3c117c81dda7bed5a8bfb1f3e01adc3c104)
@@ -3,15 +3,14 @@
 $button-row-height:40px; // use same value in monitoring
 
 #select-lessons-area {
-	display: none;
+	display: flex;
+    flex-flow: row wrap;
+    align-items: baseline;
+    &.hidden {
+    	display:none;
+    }
 }
 
-// .ui-jqgrid.ui-jqgrid-bootstrap .ui-th-column .cbox,
-// .ui-jqgrid.ui-jqgrid-bootstrap .jqgrow>td>.cbox {
-//     height: 14px !important;
-//     width: 14px !important;
-// }
-
 /* Formatting buttons on the Gradebook Lesson screen */
 #gbButtons {
 	height: $button-row-height;