<style>
        body {
            font-family: Arial, sans-serif;
        }
        .login-container {
            width: 300px;
            margin: 0 auto;
            padding: 20px;
            border: 1px solid #ccc;
            text-align: center;
        }
        .login-button {
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            cursor: pointer;
        }
        .app-buttons {
            /*display: none;*/
            margin-top: 20px;
        }
        .app-button {
            margin: 10px;
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            cursor: pointer;
        }
        .add-product-container {
            /*display: none;*/
            margin-top: 20px;
        }
        .add-product-button {
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            cursor: pointer;
        }