keystone-Icons.less-media-files

/* font-face form icons.ie7.less - really should be extracted out and shared */
@font-face {
	font-family: 'icomoon';
	src:url('fonts/icomoon.eot');
	src:url('fonts/icomoon.eot?#iefix') format('embedded-opentype'),
		url('fonts/icomoon.svg#icomoon') format('svg'),
		url('fonts/icomoon.woff') format('woff'),
		url('fonts/icomoon.ttf') format('truetype');
	font-weight: normal;
	font-style: normal;
}

...

.mce-i-media                      { &:before { font-family: 'icomoon'; content: "\e015"; } }