Fix possible glitch of layout

Author: jackycute

public/views/header.ejs

@@ -1,7 +1,7 @@
 <nav class="navbar navbar-default navbar-fixed-top unselectable hidden-print">
     <!-- Brand and toggle get grouped for better mobile display -->
     <div class="navbar-header">
-		<span class="pull-right" style="margin-top: 17px; color: #777;">
+		<span class="pull-right" style="margin-top: 17px; color: #777; float: right;">
             <div class="visible-xs">&nbsp;</div>
             <div class="visible-sm">&nbsp;</div>
             <div class="visible-md">&nbsp;</div>