query node default theme

src/app/components/query-tile/query-tile.component.scss

-ng-select {
-    font-family: roboto;
-}
\ No newline at end of file

src/app/components/query-tile/query-tile.component.ts

@@ -38,7 +38,6 @@ export class QueryTileComponent {
       data.label.toLowerCase().indexOf(term) > -1 || this.listStartsWith(data.ensg, term) || data.id.toLowerCase().indexOf(term) > -1 
       || data.proteinName.toLowerCase().indexOf(term) > -1 || data.type.toLowerCase().indexOf(term) > -1 || 
       data.groupName.toLowerCase().indexOf(term) > -1 || data.drugId.toLowerCase().indexOf(term) > -1;
-  
   }
 
   select(item) {

src/styles.scss

 @charset "utf-8";
 
 @import url('https://fonts.googleapis.com/css?family=Varela+Round');
-@import "~@ng-select/ng-select/themes/material.theme.css";
+@import "~@ng-select/ng-select/themes/default.theme.css";
 @import "~bulma/bulma.sass";
 @import '~bulma-tooltip';
 @import "~animate.css/animate.min";