fix(notification-dialog): rename pb-card-container (#203)

* fix(notification-dialog): rename pb-card-container

* rename pb-justify-center to pb-center-element

Author: mschwrdtnr

Phonebook.Frontend/src/app/shared/dialogs/display-notification-dialog/display-notification.dialog.html

@@ -8,7 +8,7 @@ <h3 mat-dialog-title class="pb-color-primary">
       seinen Vorgänger machen.
     </span>
     <!-- call for contributors -->
-    <div class="pb-flex pb-card-container">
+    <div class="pb-flex pb-center-element">
       <mat-card class="pb-card-call pb-border-color-primary">
         <mat-card-header>
           <mat-card-title><mat-icon [color]="'primary'">error_outline</mat-icon></mat-card-title>
@@ -33,7 +33,7 @@ <h3 mat-dialog-title class="pb-color-primary">
         </mat-card-content>
       </mat-card>
     </div>
-    <div class="pb-flex-row pb-card-container">
+    <div class="pb-flex-row pb-center-element">
       <!-- Profilbild -->
       <mat-card class="pb-border-color-primary">
         <mat-card-header>

Phonebook.Frontend/src/app/shared/dialogs/display-notification-dialog/display-notification.dialog.scss

@@ -29,10 +29,6 @@ p {
   margin: 0 0 0 auto;
 }
 
-.pb-card-container {
-  justify-content: center;
-}
-
 mat-card {
   flex: 1;
   min-width: 25%;