body {
        margin: 0;
        font-family: 'Segoe UI', sans-serif;
        background: linear-gradient(to bottom, #0073e6, #004080);
        color: #fff;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        height: 100vh;
        text-align: center;
        box-sizing: border-box;
    }

    header {
        box-sizing: border-box;
        background-color: #ffcc00;
        color: #d40000;
        width: 100%;
        padding: 1em;
        font-weight: bold;
        font-size: 1.8em;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    h1 {
        font-size: 3em;
        margin: 0.5em 0;
        box-sizing: border-box;
    }

    .emoji {
        font-size: 4em;
        margin-bottom: 0.2em;
        margin-top: 10px;
    }

    button {
        background-color: #d40000;
        box-sizing: border-box;
        color: white;
        padding: 1em 2em;
        font-size: 1.2em;
        border: none;
        border-radius: 50px;
        margin-top: 1em;
        cursor: pointer;
        transition: background 0.3s ease;
    }

    button:hover {
        background-color: #ff3333;
    }

    footer {
        /* position: absolute;
        bottom: 0em; */
        font-size: 0.9em;
        opacity: 0.6;
        margin-top: 50px;
    }