Fix note feedback

style/_bootstrap.scss

@@ -17,4 +17,8 @@ $theme-colors: map-remove($theme-colors, "light", "dark");
 
 $font-family-base: $font_para;
 
-@import 'bootstrap/bootstrap';
+@import 'bootstrap/bootstrap';
+
+.alert-error {
+	@extend .alert-danger;
+}

style/_page_course.scss

@@ -49,13 +49,10 @@
 			width: 50%;
 			text-align: right;
 			
-			span {
-				position: absolute;
-				width: 100%;
-				display: inline-block;
-				top: 50%;
-				transform: translateY(-50%);
-				right: 0;
+			.alert {
+				font-size: 0.8em;
+				margin: 0;
+				padding-right: 0.5em;
 			}
 		}