add lil contrbute card

sass/main.scss

@@ -82,4 +82,33 @@ a, a:focus {
         }
     }
     
-}
+}
+
+.contribute {
+    width: calc(100% - 72px);
+    margin: 24px;
+    padding: 18px 12px;
+
+    background-image: url(/img/contribute.jpg);
+    background-repeat: no-repeat;
+    background-position: center right; 
+    background-color: #1f1a14;
+    border: 1px #1f1b11 solid;
+    border-radius: 4px;
+    box-shadow: 2px 2px 8px 1px rgba(0,0,0,0.25);
+    color: #f8f3ec;
+
+    font-family: 'Crimson Text', serif;
+
+    h2,p {
+        margin: 0;
+    }
+    .button {
+        background-color: #f8f3ec;
+        color: #1f1a14;
+        padding: 4px 8px;
+        border-radius: 4px;
+        margin: 12px 0;
+        text-decoration: none;
+    }
+}

templates/index.html

@@ -52,6 +52,13 @@
     </div>
 </div>
 
+<div class="contribute">
+    <h2>Contribute!</h2>
+    <p>Anyone can submit a pull request for this wiki. Give it a go maybe!</p>
+    <br>
+    <a href="/guides/contribute.md" class="button">Get Started</a>
+</div>
+
 <!-- scripts here -->
 
 <script src="/elasticlunr.min.js"></script>