As used on the GravityKit blog

craigslist-clone.html

<style> 
.gv-list-multiple-container.gv-container {
     display:flex;
     flex-wrap: wrap;
     justify-content:center;
     margin-top:20px;
}
 .gv-container img {
    width:100% !important;
}
	
 .gv-list-multiple-container.gv-container .gv-list-view {
     margin-right: 20px;
     width: 340px;
     box-shadow: rgba(50, 50, 93, 0.25) 0px 2px 5px -1px, rgba(0, 0, 0, 0.3) 0px 1px 3px -1px;
}
	
 .gv-list-view {
    border:none !important;
}
	
 .gv-list-view-title {
    border:none !important;
}
	
 .gv-list-view-footer {
    border:none;
     background:none;
     padding-top:0px;
     padding-bottom:15px;
     padding-right:5px;
}
 </style>