Reduce Space between text boxes on one page

Site URL: https://www.riverstonechurch.net/leadership

I would like to reduce the space on this page only between two text areas.  Is that possible?

https://www.riverstonechurch.net/leadership

Add to Design > Custom CSS

/* Leadership spacing */
body#collection-5e85f87effb57b3a74b322fc {
h2, p {
    margin-top: 1px;
}
}

Thank you so much, Tuanphan.  I added the code to Design> Custom CSS and it did not make any changes.  Any ideas?

Thanks in advance.

Try new code

/* Leadership spacing */
body#collection-5e85f87effb57b3a74b322fc {
h2, p {
    margin-top: 1px !important;
}
}