updated CSS of nbpreview jupyter fileviewer

Author: mhrvol

nbpreview/css/nbpreview.css

@@ -4,8 +4,7 @@ body {
 }
 
 #main {
-    width: 99%;
-    max-width: 750px;
+    width: 80%;
     margin: 0 auto;
 }
 
@@ -19,17 +18,28 @@ body {
     border: 1px dotted #CCC;
     padding: 0.75em;
     margin-bottom: 0.5em;
-    background-color: #EEF;
+    background-color: #297aa8;
+    color: white;
+    font-weight: 400;
+    font-size: 13px;
+    font-style: normal;
 }
 
 #footer {
     border: 1px dotted #CCC;
-    background-color: #EEF;
-    font-size: 0.8em;
+    background-color: #297aa8;
     padding: 0.5em;
     text-align: center;
+    color: white;
+    font-weight: 400;
+    font-size: 13px;
+    font-style: normal;
 }
 
 #footer a, #footer a:visited {
-    color: #0077EE;
+    color: #FFFFFF;
+}
+
+table {
+    float: none !important;
 }