Add some style to the bile.

site/style.css

@@ -0,0 +1,66 @@
+body {
+  font-family: sans;
+}
+
+* {
+  margin: 0;
+}
+
+#body {
+  width: 800px;
+  margin: 0 auto;
+}
+
+#body header {
+  height: 100px;
+  background-color: rgba(0, 0, 0, 0.8);
+}
+
+#body header img {
+  width: 800px;
+  height: 100px;
+}
+
+#body nav {
+  background-color: #333333;
+  padding: 1px 0 5px 0;
+}
+
+#body nav ul {
+  list-style: none;
+  padding: 0;
+  text-align: center;
+  font-size: 24px;
+}
+
+#body nav ul li {
+  display: inline;
+  margin-left: 25px;
+}
+
+#body nav ul li:first-child {
+  margin-left: 0;
+}
+
+#body nav a, #body nav a:visited {
+  color: #51B7FF;
+  text-decoration: none;
+}
+
+#content {
+  padding: 10px;
+  background-color: rgba(0, 0, 0, 0.8);
+  color: #eeeeee;
+}
+
+p {
+  margin-top: 0.5em;
+}
+
+#background div {
+  position: fixed;
+  top: 0;
+  width: 10%;
+  height: 100%;
+  z-index: -1;
+}