body {
        background-color: #222;
    }

    .card {
        width: 90%;
        max-width: 470px;
        background: linear-gradient(90deg,#005dfe, #8a5482);
        color: #fff;
        margin: 100px auto 0;
        border-radius: 20px;
        padding: 40px 35px;
        text-align: center;
    }

    .card input {
        border: 0;
        outline: 0;
        background-color: #ebfffc;
        color: #555;
        padding: 5px 10px;
        height: 40px;
        border-radius: 15px;
        flex: 1;
        margin-right: 16px;
        font-size: 18px;
    }

    .card button {
        border: 0;
        outline: 0;
        background: #01c6fc;
        color: #ffffff;
        border-radius: 10px;
        height: 45px;
        width: auto;
        cursor: pointer;
        font-size: 16px;
        padding: 5px 10px;
    }

    .card pre {
        font-size: 16px;
        text-align: left;
        padding-left: 50px;
        margin-top: 20px;
    }

    .fade {
        animation: fadeIn 0.5s ease-in-out;
    }

    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(10px); }
        to { opacity: 1; transform: translateY(0); }
    }