css/style.css

<style>
    div[data-testid="stToolbar"] {
        visibility: hidden;
        height: 0%;
        position: fixed;
    }

    div[data-testid="stDecoration"] {
        visibility: hidden;
        height: 0%;
        position: fixed;
    }

    div[data-testid="stStatusWidget"] {
        visibility: hidden;
        height: 0%;
        position: fixed;
    }

    #MainMenu {
        visibility: hidden;
        height: 0%;
    }

    header {
        visibility: hidden;
        height: 0%;
    }

    footer {
        visibility: hidden;
        height: 0%;
    }
</style>