nextcloud/apps/files_external/css/settings.css

td.status > span {
	display: inline-block;
	height: 16px;
	width: 16px;
	vertical-align: text-bottom;
}
span.success {
	background: #37ce02;
	border-radius: 8px;
}
span.error {
	background: #ce3702;
}

td.mountPoint, td.backend { width:10em; }
td.remove>img { visibility:hidden; padding-top:0.8em; }
tr:hover>td.remove>img { visibility:visible; cursor:pointer; }
#addMountPoint>td { border:none; }
#addMountPoint>td.applicable { visibility:hidden; }
#selectBackend { margin-left:-10px; }