Clicking on a div in the above diagram causes the following CSS class to be added/removed:

    .sticky {
        position: sticky;
        top: 100px;
    }

    .sticky-two {
        position: sticky;
        top: 60px;
    } 

    .sticky-three {
        position: sticky;
        top: 30px;
    } 

    .sticky-four {
        position: sticky;
        top: 0;
    }