diff --git a/pub/style/style.css b/pub/style/style.css
index 5087ebd..fe1789b 100755
--- a/pub/style/style.css
+++ b/pub/style/style.css
@@ -17,18 +17,16 @@
   unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
 }
 
+/* Body */
 
 body {
-	display: flex;
-	flex-wrap: wrap;
-	font-family: serif;
-	/* font-family: 'Source Serif Pro', serif; */
-	font-size: 1.5em;
-}
+  display: flex;
+  flex-wrap: wrap;
+  font-family: serif;
+  /* font-family: 'Source Serif Pro', serif; */
+  font-size: 1.5em;
+  background-color: #fff;
 
-header {
-	flex-basis: 100%;
-	flex-shrink: 0;
 }
 
 /* If the screen size is 600px wide or less, set the font-size of <div> to 30px */
@@ -42,57 +40,102 @@ header {
 
 }
 
-article {
-	flex-basis: 60%;
-	padding-left: 1em;
+/* header */
+header {
+  flex-basis: 100%;
+  flex-shrink: 0;
+  background-color: #eee;
+  clear: both;
+  color: #555;
+  padding: 0em;
+  margin: 0;
 }
 
-footer {
-	flex-basis: 100%;
-	flex-shrink: 0;
+header h1 {
+  margin-left: 0.7em;
 }
 
-header nav {
-	display: flex;
-	justify-content: space-between;
-}
-
-nav a,
 header a {
-	text-decoration: none;
-	color: inherit;
+  /* 
+  color: inherit;
+  */
+  text-decoration: none; 
+  color: #005386;
 }
 
 header h1 span {
-	margin-left: 0em;
-	font-size: 70%;
-	font-style: italic;
+  margin-left: 0em;
+  font-size: 70%;
+  font-style: italic;
+}
+
+/* Navigation bar */
+header nav {
+  display: flex;
+  justify-content: space-between;
 }
 
 body>nav {
-	flex-basis: content;
-	padding-right: 1vw;
-	min-width: 16em;
+  float: left;
+  margin: 0 1px 0 0;
+  border-right: 1px dotted #ccc;
+  width: 250px;
+}
+
+nav a{
+  /* 
+  color: inherit;
+  */
+  text-decoration: none; 
+  color: #005386;
+}
+
+nav a:hover {
+  background-color: #ddd;
 }
 
 nav ul {
-	display: flex;
-	flex-direction: column;
-	list-style-type: none;
-	list-style-position: outside;
-	padding-left: 0;
+  display: flex;
+  flex-direction: column;
+  list-style-type: none;
+  list-style-position: outside;
+  padding-left: 0;
 }
 
 nav li ul {
-	padding-left: 0.6em
+  padding-left: 0.6em;
+}
+
+nav li a {
+  display: block;
+  margin: 0;
+  padding: 0.3em 2em 0.8ex 1em;
+}
+
+/* Other sections */
+
+article{
+  padding: 0.3em 0 0 0;
+  flex-basis: 70%;
+  padding-left: 1em;
 }
 
 footer {
-	margin-top: 2em;
-	display: flex;
-	justify-content: space-between;
+  flex-basis: 100%;
+  flex-shrink: 0;
+  margin-top: 2em;
+  display: flex;
+  justify-content: space-between;
 }
 
+/* links */
+
+a {
+  color: #005386;
+}
+
+/* Images and figures */
+
 figure figcaption {
   display: block;
   margin-left: auto;