Bootstrap 3: pull-right for col-lg only

Answer 1

Try this LESS snippet (It's created from the examples above & the media query mixins in grid.less).

@media (min-width: @screen-sm-min) {
.pull-right-sm {
  float: right;
}
}
@media (min-width: @screen-md-min) {
.pull-right-md {
  float: right;
}
}
@media (min-width: @screen-lg-min) {
.pull-right-lg {
  float: right;
}
}