added some styling and color coded syntax highlighting to beans chapter

spring-framework-reference/css/html/stylesheet.css

@@ -1,3 +1,5 @@
+@IMPORT url("highlight.css");
+
 html {
   padding:       0pt;
   margin:        0pt;
@@ -22,7 +24,7 @@ hr {
   background:    gray;
 }
 
-h1,h2,h3 {
+h1,h2,h3,h4 {
   color:         #234623;
   font-family:   Arial, Sans-serif;
 }
@@ -37,6 +39,7 @@ pre.programlisting {
   padding:       7pt 3pt;
   border:        1pt solid black;
   background:    #eeeeee;
+  clear:         both;
 }
 
 div.table {
@@ -54,3 +57,43 @@ div.table td {
   padding-left:  7px;
   padding-right: 7px;
 }
+
+.sidebar {
+    float: right;
+    margin: 10px 0 10px 30px;
+    padding: 10px 20px 20px 20px;
+    width: 33%;
+    border: 1px solid black;
+    background-color: #F4F4F4;
+    font-size: 14px;
+}
+
+.mediaobject {
+    padding-top: 30px; 
+    padding-bottom: 30px; 
+}
+
+.legalnotice {
+    font-family: Verdana, Arial, helvetica, sans-serif;
+    font-size: 12px;
+    font-style: italic;
+}
+
+p.releaseinfo {
+    font-size: 100%;
+    font-weight: bold;
+    font-family: Verdana, Arial, helvetica, sans-serif;
+    padding-top: 10px;
+}
+
+p.pubdate {
+    font-size: 120%;
+    font-weight: bold; 
+    font-family: Verdana, Arial, helvetica, sans-serif;
+}
+
+span.productname {
+    font-size: 200%;
+    font-weight: bold; 
+    font-family: Verdana, Arial, helvetica, sans-serif;
+}