Update images to match existing UI

Author: baransu

css/main.scss

@@ -506,13 +506,14 @@ $baseurl: '{{ site.baseurl }}/images';
 /* Image */
 
 	.image {
-		border-radius: 3px;
+    margin: 20px 0;
+    padding: 40px;
 		border: 0;
 		display: inline-block;
 		position: relative;
 
 		img {
-			border-radius: 3px;
+      box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
 			display: block;
 		}
 

images/erlanglab_dashboard.png

@@ -32,7 +32,7 @@ <h2>What is Erlang Performance Lab ?</h2>
 				<!-- Two -->
 					<section id="two" class="wrapper alt style2">
 						<section class="spotlight">
-							<div class="image"><img src="images/erlangpl_dashboard.png" alt="" /></div><div class="content">
+							<div class="image"><img src="images/erlanglab_dashboard.png" alt="" /></div><div class="content">
 								<h2>Dashboard</h2>
 								<p>Gives high level overview of the current system throughput,
                     process activities like spawns or exits, memory footprint
@@ -44,7 +44,7 @@ <h2>Dashboard</h2>
 							</div>
 						</section>
 						<section class="spotlight">
-							<div class="image"><img src="images/erlangpl_3d.png" alt="" /></div><div class="content">
+							<div class="image"><img src="images/erlanglab_st.png" alt="" /></div><div class="content">
 								<h2>Message passing graph</h2>
 								<p>In Erlang-based systems processes share data through message passing.
                     If certain processes receive more messages than they can handle,
@@ -57,7 +57,7 @@ <h2>Message passing graph</h2>
 							</div>
 						</section>
 						<section class="spotlight">
-							<div class="image"><img src="images/erlangpl_vizceral.png" alt="" /></div><div class="content">
+							<div class="image"><img src="images/erlanglab_traffic.png" alt="" /></div><div class="content">
 								<h2>Traffic graph</h2>
 								<p>
                     Gaining visibility into network traffic in distributed systems is of great importance as it helps to understand the behaviour of the entire system, which can consist of more than one Erlang node.