Is it possible to change the height of the guest-bg.jpg image so that the frontpage container it is in is reduced in height without losing formatting and how might I go about doing so if it is?

Dear Matt,

Open this file /components/com_community/templates/default/css/style.css, find this code :

#community-wrap .hero-area .hero-area-wrapper{display:block;width:100%;position:relative;height:0;padding:41.14% 0 0 0;overflow:hidden;}