Fixed layout issues

More responsive UI using proper bootstrap container and cols.

Updating some colors and resume screen.

src/app/app.component.html

@@ -1,6 +1,8 @@
-<div style="text-align:center">
-  <app-toolbar></app-toolbar>
+<div class="d-flex flex-column h-100">
+<app-toolbar></app-toolbar>
+<div class="container-fluid flex-grow-1">
+  <main class="h-100" [@routerTransition]="o.isActivated ? o.activatedRoute : ''">
+    <router-outlet #o="outlet"></router-outlet>
+  </main>
+</div>
 </div>
-<main [@routerTransition]="o.isActivated ? o.activatedRoute : ''">
-  <router-outlet #o="outlet"></router-outlet>
-</main>