body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 5px 10px;
            background: whitesmoke;
        }
        .tete {
            position: sticky;
            top: 0;
            box-shadow: 0 1rem 1rem -1rem black;
        }
        .login {
            background: linear-gradient( #0E105D 0%, #0E105D 5%, white 5%);
            border-radius: 15px;
            padding: 20px;
            margin: 20px 5px;
            box-shadow: 0 1rem 1rem -1rem black; 
        }
        .qguiz {
            background: linear-gradient( #0E105D 0%, #0E105D 10%, white 5%);
            border-radius: 15px;
            padding: 20px;
            margin: 20px 5px;
            box-shadow: 0 1rem 1rem -1rem black; 
        }
        hr {
            border: none;
            height: 2px;
            background-color: whitesmoke;
        }
        .group {
            margin-top: 10px;
            display: flex;
            flex-direction: column;
        }
        input {
            margin: 5 0px;
            padding: 10px;
            box-sizing: border-box;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        button {
            padding: 10px;
            background-color: #0E105D;
            color: white;
            cursor: pointer;
            border: none;
            border-radius: 5px;
        }
        button:hover { background-color: #1800EA;}
        footer { text-align: center; color: #666; }