.siftable {
  cursor: pointer;
  background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAKCAMAAAC38k/IAAAAM1BMVEUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACjBUbJAAAAEHRSTlMm9g/sJPIh5hduPgFsahgAaXZRtQAAADhJREFUeNpljUkKACAMxOq+2/7/tWorFDG3wJABxJgGCoA+EPUrYGhTRBwxlcXOQ26/6EwDf/o5XY2pBikCQ5MVAAAAAElFTkSuQmCC") 100% 50% no-repeat;
}

.sift-asc {
  background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAECAMAAACN+C64AAAAJ1BMVEUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADdEvm1AAAADHRSTlNzejz7Lusoa/Yj5wC22+lDAAAAKElEQVR42i3HQQ4AIAgDsGkQle3/7yWIvRXkjc0G+pHwYyqjs/TMSgIw+gHkkc2ebwAAAABJRU5ErkJggg==") 100% 50% no-repeat;
}

.sift-des {
  background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAECAMAAACN+C64AAAAJ1BMVEUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADdEvm1AAAADHRSTlNzejz7Lusoa/Yj5wC22+lDAAAAKUlEQVR42i3HSxIAEBDE0KF8hvT9z0s1b5VEl1WuaO6Ch5FS8Ie1J88BMO0B5B/dNA0AAAAASUVORK5CYII=") 100% 50% no-repeat;
}