fix(portal): rename home page grid css selector

Author: clukhei

portal/assets/custom-css/pages/_home.scss

@@ -60,7 +60,7 @@ section.wrapper{
                         grid-template-columns: 1fr;
                         gap: 1rem;
                     }
-                    .grid{
+                    .home-grid{
                         display:grid;
                         grid-template-rows: repeat(2,1fr);
                         gap: 3rem;

portal/assets/custom-css/style.css

@@ -32,7 +32,7 @@ <h1><strong>Build your next best digital experience for Singapore</strong></h1>
             system and start building.</p>
     </div>
     <div class="home-get-started-content-grid">
-        <div class="grid left">
+        <div class="home-grid left">
             <div class="card">
                 <div class="card-body">
                     <div class="card-eyebrow">What's new</div>
@@ -52,7 +52,7 @@ <h1><strong>Build your next best digital experience for Singapore</strong></h1>
                 </div>
             </div>
         </div>
-        <div class="grid right">
+        <div class="home-grid right">
             <div class="card">
                 <div class="card-body">
                     <div class="card-eyebrow">Documentation</div>