body {
            display: flex;
            justify-content: center;  /* centre horizontalement */
            align-items: center;      /* centre verticalement */
            height: 100vh;            /* hauteur de la fenêtre */
            font-family: Arial, sans-serif;
            background-color: #f4f4f4;
        }

        .form-container {
            background: #fff;
            padding: 30px 40px;
            border-radius: 8px;
            box-shadow: 0 0 15px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 400px;
        }

        h2 {
            text-align: center;
            margin-bottom: 20px;
        }

        input {
            width: 100%;
            padding: 10px;
            margin-top: 10px;
            margin-bottom: 20px;
            border-radius: 5px;
            border: 1px solid #ccc;
            box-sizing: border-box;
        }

        button {
            width: 100%;
            padding: 10px;
            background-color: #3498db;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }

        button:hover {
            background-color: #2980b9;
        }

       

        .back-link {
            display: block;
            text-align: center;
            
            text-decoration: none;
            color: white;
        }

        .back-link:hover {
            text-decoration: underline;
        }