
                margin-left: 100px;
                margin-top: 10px;
                width: 250px;
                border-radius: 5px;
                border-color: none;
                height: 30px;
                color: royalblue;
                font-weight: bolder;
                font-size: 20px;
               
        }

    </style>
</head>
<body>
    <div class="mode">
        Dark mode:            
        <span class="change">OFF</span>
    </div>
    <div class="navbar">
