Template source: thankyou.html

<!DOCTYPE html>
{% load static %}
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Verification Status..</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        body {
            font-family: Arial, Helvetica, sans-serif;
            font-size: .8rem;
        }
        .error {
            color: #dc3545;
        }
        .success {
            color: #28a745;
        }
        .booking-wrap {
            max-width: 400px;
            border: 1px solid #DDD;
            box-shadow: 2px 2px 2px #CCC;
            padding: 20px;
            padding-bottom: 8px;
            border-radius: 4px;
            margin: auto;
            left: 0;
            right: 0;
            bottom: auto;
            top: auto;
            /*max-height: 500px;*/
            position: absolute;
        }
        .rows {
            margin-bottom: 15px;
            text-align: center;
        }
        .rows label { text-align: left}
        .rows label strong {
            margin-bottom: 5px;
            display: block;
        }
        .rows input {
            width: 94%;
            border: none;
            min-height: 25px;
            border-radius: 4px;
            border: 1px solid #DDD;
            padding: 1% 3%;
        }
        button, .btn {
            border-radius: 4px;
            line-height: 40px;
            padding: 0 15px;
            width: 100%;
            /* max-width: 360px; */
            margin: 0 auto;
            cursor: pointer;
            background: #40a3d3;
            color: #FFF;
            font-size: 1rem;
        }

        button:hover, .btn:hover {
            opacity: .9;
        }
        button[type="submit"]:disabled {
            background-color: #DDD;
            cursor: default;
        }
        h2 {
            text-align: center;
            margin-bottom: 15px;
            border-bottom: 1px solid #DDD;
            padding-bottom: 10px;
        }

        .booking-wrap-2 {
            max-width: 200px;
            border: 1px solid #DDD;
            box-shadow: 2px 2px 2px #CCC;
            padding: 20px;
            padding-bottom: 8px;
            border-radius: 4px;
            margin: auto;
            left: 0;
            right: 0;
            bottom: auto;
            top: auto;
        }

    </style>
</head>
<body>

    <div class="booking-wrap-2">
        <img height="50" src="{% static 'images/ht_media_logo.png' %}">
    </div>
    <div class="booking-wrap">
        {% if success %}
        <div class="rows success">
            <h3>{{message}}<span style="padding-left:10px;" class="glyphicon glyphicon-ok-sign"></span></h3>
        </div>
        {% else %}
        <div class="rows error">
              <h3> <span style="padding-right:10px;" class="glyphicon glyphicon glyphicon-alert"></span>{{message}}</h3>
        </div>
        {% endif %}

    </div>
</body>
</html>