Adding footer with link back to github repo

index.php

@@ -59,5 +59,9 @@ if( 'POST' === $_SERVER['REQUEST_METHOD'] ) {
     </ul>
 </section>
 
+<footer>
+    <a href="https://github.com/abackstrom/php-tools">php-tools</a> by <a href="https://github.com/abackstrom">abackstrom</a>.
+</footer>
+
 </body>
 </html>

style.css

@@ -9,6 +9,14 @@ body {
     margin: 0;
 }
 
+a {
+    color: #54b4e8;
+}
+
+a:hover {
+    color: #44a0d2;
+}
+
 label {
     display: inline-block;
     margin-right: 0.5rem;
@@ -71,6 +79,13 @@ h2 {
     padding: 0.5rem 0;
 }
 
+footer {
+    border-top: 1px solid #eee;
+    color: #ccc;
+    opacity: 0.5;
+    padding: 1rem;
+}
+
 .randomness,
 .cols {
     margin: 1rem;