Pure css responsive version of twitter bootstrap pull right & pull left with a reset option.

twbs.responsivepull.css

/* With default bootstrap breakpoint sizes */
.pull-left-xs {
  float: left;
}

.pull-right-xs {
  float: right;
}

.pull-reset-xs {
  float: none;
}

@media (min-width: 768px) {

  .pull-left-sm {
    float: left;
  }

  .pull-right-sm {
    float: right;
  }

  .pull-reset-sm {
    float: none;
  }

}

@media (min-width: 992px) {

  .pull-left-md {
    float: left;
  }

  .pull-right-md {
    float: right;
  }

  .pull-reset-md {
    float: none;
  }

}

@media (min-width: 1200px) {

  .pull-left-lg {
    float: left;
  }

  .pull-right-lg {
    float: right;
  }

  .pull-reset-lg {
    float: none;
  }

}