Separated out CSS files, and updated some of them

css/layout.css

@@ -0,0 +1,28 @@
+/**
+ * These styles handle layout
+ */
+
+body {
+	margin: 0;
+	padding: 0;
+}
+#header-inner, #content, #footer-inner {
+	width: 80%;
+	min-width: 45em;
+	max-width: 60em;
+	margin: 0 auto; 
+}
+#main, #sidebar {
+	position: relative;
+} 
+#main {
+	float: left;
+	width: 73%;
+} 
+#sidebar {
+	float: right;
+	width: 23%;
+}
+#footer {
+	clear: both;
+}