diff --git a/index.html b/index.html
index e33aebd..ff04a82 100644
--- a/index.html
+++ b/index.html
@@ -47,10 +47,10 @@
 
       <section class="credits">
         <h1>Credits</h1>
-        <div>
-          <a href="https://www.flickr.com/photos/stevendepolo/5644838033/"><img src="styles/blocks.jpg" alt="" class="thumbnail">Steven Depolo, Flickr</a>
-          <a href="https://pixabay.com/en/chain-rust-past-bondage-history-232930/"><img src="styles/chains.jpg" alt="" class="thumbnail">Pixabay</a>
-        </div>
+        <ul>
+          <li><a href="https://www.flickr.com/photos/stevendepolo/5644838033/"><img src="styles/blocks.jpg" alt="" class="thumbnail">Steven Depolo, Flickr</a></li>
+          <li><a href="https://pixabay.com/en/chain-rust-past-bondage-history-232930/"><img src="styles/chains.jpg" alt="" class="thumbnail">Pixabay</a></li>
+        </ul>
       </section>
 
     </main>
diff --git a/styles/blockchain.css b/styles/blockchain.css
index de08da0..46fe7d6 100644
--- a/styles/blockchain.css
+++ b/styles/blockchain.css
@@ -9,8 +9,7 @@
   text-align: left;
   justify-content: flex-start;
 }
-.credits > div > a {
-  display: block;
+.credits ul {
   font-size: 0.75em;
   line-height: 1.2;
 }
diff --git a/styles/main.css b/styles/main.css
index b648b13..6f9daf3 100644
--- a/styles/main.css
+++ b/styles/main.css
@@ -162,10 +162,12 @@ main {
 }
 
 .row, .col {
+  position: relative;
   display: flex;
   flex-grow: 1;
   flex-basis: 0;
   align-items: stretch;
+  justify-content: center;
 }
 
 .row--shrink, .col--shrink {
@@ -235,6 +237,8 @@ section {
   display: flex;
   flex-direction: column;
   justify-content: center;
+  top: 0;
+  left: 0;
   width: 100%;
   height: 100%;
   margin: 0;