add style to the nav file

index.html

@@ -6,6 +6,32 @@
     <script src="https://how2j.cn/study/js/bootstrap/3.3.6/bootstrap.min.js"></script>
 </head>
 
+<style>
+    body{
+        font-size: 12px;
+        font-family: Arial;
+    }
+    a{
+        color:#999;
+    }
+    .redColor{
+        color: #C40000 !important;
+    }
+    nav.top{
+        background-color: #f2f2f2;
+        padding-top: 5px;
+        padding-bottom: 5px;
+        border-bottom: 1px solid #e7e7e7;
+    }
+    nav.top span, nav.top a{
+        color: #999;
+        margin: 0px 10px 0px 10px;
+    }
+    nav.top a:hover{
+        color: #C40000;
+        text-decoration: none;
+    }
+</style>
 <nav class="top">
     <a href="#nowhere">
         <span class="glyphicon glyphicon-home redColor"></span>