Improve language used on front page. [#3266762] (#317)

Frontpage needs better language to avoid need to update based on released versions of Drupal core and to ensure we use headings for headings etc.

web/themes/simplytest_theme/templates/layout/page--front.html.twig

@@ -7,24 +7,25 @@
   <div class="explanation__wrapper py-5 bg-light-blue">
     <section class="gap-4 max-w-screen-lg container mx-auto explanation-container p-5 lg:pl-32 flex flex-col md:flex-row">
       <div class = "explanation__first mb-10 lg:mb-0 w-full md:w-1/2">
-        <div class="text-title-blue text-3xl font-bold mb-5">
+        <h2 class="text-title-blue text-3xl font-bold mb-5">
           What is this?
-        </div>
+        </h2>
         <div class="body">
           simplytest.me helps you to find the module, theme or distribution that fits your needs. <br><br>
           It provides sandbox environments for testing the functionality of any project before even downloading it.<br><br>
           Simple, fast and for free!
         </div>
       </div>
       <div class = "explanation__second w-full md:w-1/2">
-        <div class="text-title-blue text-3xl font-bold mb-5">
+        <h2 class="text-title-blue text-3xl font-bold mb-5">
           How to use it?
-        </div>
+        </h2>
         <div class="body">
           <ol>
             <li>Start typing a project's name or enter a shortname directly.</li>
-            <li>Choose your preferred version. Drupal 6, 7 and 8 are supported.</li>
+            <li>Choose your preferred version. Multiple versions of Drupal are supported.</li>
             <li>Hit the button (wait until your sandbox is ready) and test it!</li>
+            <li>Your default username/password are admin/admin.</li>
           </ol>
         </div>
       </div>