Added classes to sample UI

src/app/e-services/e-services.component.scss

@@ -112,4 +112,9 @@
             }
         }
     }
+}
+
+.table-holder, .key-value-holder {
+    width: 90%;
+    margin: 0 auto;
 }

src/app/key-value-holder/key-value-holder.component.html

@@ -1,4 +1,4 @@
-<ul class="bill-breakup">
+<ul class="key-value">
     <li *ngFor="let keyValue of keyValues">
         <label> {{ keyValue.key }}: </label>
         <div class="value"> {{ keyValue.value }} </div>

src/app/key-value-holder/key-value-holder.component.scss

@@ -1,4 +1,4 @@
-.bill-breakup {    
+.key-value {    
     display: grid;
     grid-template-columns: 1fr 1fr;
     list-style: none;