style/small_window.css

@media(max-width: 800px) {
    div[data-testid="stMainBlockContainer"] {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    div[data-testid="stBottomBlockContainer"] {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    div[data-testid="stSidebarCollapsedControl"] button[data-testid="stBaseButton-headerNoPadding"]::after {
        content: "More Use Cases"
    }
}

@media(max-width: 800px) or (max-height: 800px) {
    div[data-testid="stMainBlockContainer"] div[data-testid="stVerticalBlock"]>div[data-testid="stElementContainer"]:has( div[data-testid="stHeadingWithActionElements"]) {
        display: none;
    }

    div[class="main-intro-normal-window"] {
        display: none;
    }
}