Where do the dropshadows come from in the demo tmsweb_responsivegrid

WEB WEB Feature Requests
1

I can't workout where it is applied.

2

The item classname is set to respitem and this is defined as a CSS class in index.html


<STYLE>
  .respitem {box-shadow: 10px 10px 20px grey;  border-radius: 10px; }
  .respgrid {padding:20px;}
</STYLE>