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    }
    nav {
        padding: 5px;
        display: flex;
        justify-content: center;
        background-color: rgb(0, 0, 197);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }
    nav a {
        padding: 10px;
        text-decoration: none;
        color: white;
        font-size: large;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }
    nav a:hover {
        transform: scale(1.05);
        background-color: rgb(0, 0, 0);
    }
    header h1 {
        text-align: center;
        padding: 0;
        margin: 0;
        background-color: rgb(4, 0, 255);
        color: white;
        border-radius: 0;
    }
    .first {
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        border-radius: 0px 0px 8px 8px;
        background-color: #fff;
        max-width: 1000px;
        padding: 20px;
        text-align: center;
        margin: auto;
    }
    div {
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        border-radius: 8px;
        background-color: #fff;
        max-width: 1000px;
        padding: 20px;
        text-align: center;
        margin-top: 10px;
        margin: auto;
    }
    .hello {
        text-decoration: none;
        background-color: rgb(68, 68, 151);
        border-radius: 10px;
        padding: 7px;
        color: white;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        margin: auto;
    }
    @media screen and (max-width: 600px) {
        nav a {
            font-size: medium;
        }
        .first img {
            max-width: 90%;
        }
    }
    body {
        line-height: 1.6;
        margin: 0;
        padding: 0;
    }
</style>