<style>
            .header {
                position: sticky;
                top: 0;
                background-color: rgba(152, 168, 164, 0.4);
                z-index: 1000;
                padding: 10px;
                display: flex;
                justify-content: center;
            }
 
            .header img {
                width: 250px;
                height: 250px;
            }
 
            .button {
                display: inline-block;
                padding: 10px 20px;
                font-size: 16px;
                color: #ffffff;
                background-color: #000000;
                text-decoration: none;
                border-radius: 20px;
                transition: background-color 0.3s ease;
                margin-top: 20px;
            }
 
            .button:hover {
                background-color: #333333;
            }
 
            .center {
                text-align: center;
            }
 
     /* Neue CSS-Regeln für 'message' und 'number' */
             #message {
               
                font-size: 24px;
                color: black;
            }
 
            #number {
                
                font-size: 18px;
                color: black;
            }
            .button-div {
                display: flex;
                flex-direction: column;
                align-items: center;
                margin-top: 20px;
            }
 
            .navigation {
                display: flex;
                justify-content: space-around;
                list-style: none;
                padding: 10px;
                background-color: #333;
                color: #fff;
            }
 
            .navigation a {
                color: #fff;
                text-decoration: none;
            }
 
        </style>
