Update index.html

Update index header for the about section.

index.html

@@ -47,8 +47,7 @@
                 <div class="mx-auto text-center">
                     <h1 class="mx-auto my-0 text-uppercase">DDD Filter</h1>
                     <h2 class="text-white-50 mx-auto mt-2 mb-5">Implementation of DDD Filter, allowing users to have good visualization of how the DDD Filter work in a network. </h2>
-                    <h2 class="text-white-50 mx-auto mt-2 mb-5">DDD Filter applications in the Network
-This is a simulation project, implements the applications of DDD Filter in the network. Preventing the attacker to overflow the network with many packets.</h2>
+<h3 class="text-white-50 mx-auto mt-2 mb-5">This is a simulation project, implements the applications of DDD Filter in the network. Preventing the attacker to overflow the network with many packets.</h3>
                     <a class="btn btn-primary js-scroll-trigger" href="#projects" onclick="openNav()">Get Started</a>
                 </div>
             </div>
@@ -92,7 +91,7 @@ <h2 class="text-white mb-4">DDD Filter applications in the Network</h2>
                   </div>
                   </form>
 
-                  
+
                   <div style="float:left; padding-top: 40px; padding-left: 20px;">
                   <p><button onclick="startSimulation()" class="btn btn-light btn-sm">Start Simulation</button></p>
                   <p><button onclick="stopSimulation()" class="btn btn-light btn-sm">End Simulation</button></p>