Make image smaller in mobile view only

Site URL: https://www.jivamorelife.com/links

Hi. I am creating a replica of a "linktree" landing page but on my website. I was able to format it correctly on the website view, but when you look at the mobile view, the image (a photo of me) is really large and takes up most of the screen so you have to scroll down to see the links (image below).

How can I make the image smaller in the mobile view so you can see at least 4 links without scrolling?

Add to Design > Custom CSS

/* Mobile-Links image */
@media screen and (max-width:767px) {
div#block-yui_3_17_2_1_1618015393840_2565 {
    width: 50%;
    margin: 0 auto;
}
}