fix last element col width

src/app/core/service-list/service-list.component.html

@@ -77,7 +77,7 @@
     <div class='container'>
       <div class='row '>
         <div *ngFor='let service of services; let i = index; trackBy: trackById'
-             [class.col-12]='services.length % 2 == 1 && i == services.length-1'
+             [class.col-sm-12]='services.length % 2 == 1 && i == services.length-1'
              class='col-12 col-sm-6 border-top p-1'>
           <app-service-in-list [service]='service'></app-service-in-list>
           <button class='btn btn-link' *ngIf='isLoggedIn'