Sorry, Page Not Founde{ float: left; text-align: center; color: #fff; margin-right: 12px; padding: 16px; border-radius: 4px; background: #999; } .exception .source-code{ padding: 6px; border: 1px solid #ddd; background: #f9f9f9; overflow-x: auto; } .exception .source-code pre{ margin: 0; } .exception .source-code pre ol{