error.php



    <!DOCTYPE html>

    <html lang="en">

    <head>

        <meta charset="UTF-8">

        <title>Error</title>

        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css">

        <style type="text/css">

            .wrapper{

                width: 750px;

                margin: 0 auto;

            }

        </style>

    </head>

    <body>

        <div class="wrapper">

            <div class="container-fluid">

                <div class="row">

                    <div class="col-md-12">

                        <div class="page-header">

                            <h1>Invalid Request</h1>

                        </div>

                        <div class="alert alert-danger fade in">

                            <p>Sorry, you've made an invalid request. Please <a href="index.php" class="alert-link">go back</a> and try again.</p>

                        </div>

                    </div>

                </div>        

            </div>

        </div>

    </body>

    </html>