Added some styles; added a basic main navigation side bar

assets/styles/kraken.scss

@@ -1,3 +1,62 @@
+$nav-width: 200px;
+
+$box-shadow-1: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
+$box-shadow-2: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
+
 body{
   background: lightgrey;
 }
+
+#main-nav{
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: $nav-width;
+  height: 100%;
+  padding: 20px 0;
+  background: #212121;
+  color: white;
+  box-shadow: $box-shadow-1;
+  box-sizing: border-box;
+
+  h3{
+    text-align: center;
+  }
+
+  ul{
+    list-style: none;
+
+    li{
+      margin: 0;
+      border-bottom: 1px solid #999;
+
+      &:first-child{
+        border-top: 1px solid #999;
+      }
+    }
+
+    a{
+      display: block;
+      box-sizing: border-box;
+      width: $nav-width;
+      padding: 10px 15px;
+      color: limegreen;
+      font-size: 2.5rem;
+      text-decoration: none;
+      transition: all 230ms ease-in-out;
+
+      &:hover{
+        background: rgba(255, 255, 255, 0.1);
+      }
+    }
+  }
+}
+
+#main-wrapper{
+  max-width: 1200px;
+  margin-top: 25px;
+  padding: 20px 30px;
+  background: white;
+  border-radius: 5px;
+  box-shadow: $box-shadow-2;
+}