Add Learn JSON Schema screenshot

Signed-off-by: Juan Cruz Viotti <[email protected]>

content/_index.html

@@ -101,14 +101,14 @@ <h2 class="display-6 fw-bold">Nano-second input data validation for APIs</h2>
   </div>
 </section>
 
-<section class="py-5 bg-light bg-gradient border-top mt-5">
+<section class="py-5 bg-light bg-gradient border-top border-bottom shadow-sm mt-5">
   <div class="container">
     <div class="row">
       <div class="col-12 col-xl-6">
         <div class="bg-black text-light d-inline-block p-3 mb-4">
           <h2 class="fw-light display-6 mb-0">Looking for expert help?</h2>
         </div>
-        <p class="lead mb-4">We offer world-class consulting, development, and training on APIs, JSON Schema, C++, CMake, and more at competitive prices.</p>
+        <p class="lead mb-4">We offer world-class consulting, development, and training on APIs, JSON Schema, C++, CMake, and more.</p>
 
         <a class="btn btn-outline-dark" href="mailto:{{<email>}}" role="button">Get in touch to discuss more</a>
       </div>
@@ -137,3 +137,14 @@ <h3 class="h5 fw-bold">
     </div>
   </div>
 </section>
+
+<section class="pt-5 mt-4">
+  <div class="container text-center">
+    <p class="lead">Learn more about JSON Schema, the machine-readable declarative language that powers many of our technologies</p>
+    <a href="https://www.learnjsonschema.com">www.learnjsonschema.com</a>
+
+    <a href="https://www.learnjsonschema.com">
+      <img src="learnjsonschema.png" class="img-fluid" alt="Screenshot of LearnJSONSchema.com">
+    </a>
+  </div>
+</section>