@selectors: primary, info, success,warning,danger; each(@selectors, { .btn-@{value} { color: #ffffff; } });
.btn-primary { color: #ffffff; } .btn-info { color: #ffffff; } .btn-success { color: #ffffff; } .btn-warning { color: #ffffff; } .btn-danger { color: #ffffff; }
.container { margin-left: percentage(0.5); }
.container { margin-left: 50%; }
.container { background:lighten(#00ff00, 30%) }
.container { background: #99ff99; }
.container { background:darken(#cb7832, 30%) }
.container { background: #502f14; }