Add button to statistic view which shows the correct answer/s

src/app/components/shared/statistic/statistic.component.html

 <div fxLayout="column" fxLayoutAlign="center" fxLayoutGap="20px" fxFill>
   <div fxLayout="row" fxLayoutAlign="center">
     <mat-card>
-      <mat-card-header>
-        <h3>{{subject}}</h3>
-      </mat-card-header>
+        <div fxLayout="row" fxLayoutAlign="center">
+          <mat-card-title>
+            <h4>{{subject}}</h4>
+          </mat-card-title>
+          <button mat-raised-button>Show Correct</button>
+        </div>
       <mat-divider></mat-divider>
       <mat-toolbar></mat-toolbar>
       <div>

src/app/components/shared/statistic/statistic.component.scss

@@ -8,3 +8,13 @@ mat-toolbar {
   height: 15px;
   background-color: #fff8e1;
 }
+
+.mat-raised-button {
+  display: flex;
+  justify-content: flex-end;
+  padding-top: 0%;
+  padding-bottom: 0%;
+  padding-right: 5%;
+  padding-left: 5%;
+  max-height: 50px;
+}