ripple-core/public/less/mixins.less

Ripple is an interactive audience response system that allows presenters to survey audience members in real time communication through their mobile devices.

.well (@wellsize:20px) {
  min-height: @wellsize;
  padding: (@wellsize - 1);
  margin-bottom: @wellsize;
  background-color: #f5f5f5;
  border: 1px solid #eee;
  border: 1px solid rgba(0, 0, 0, 0.05);
  .border-radius(4px);
  .box-shadow(inset 0 1px 1px rgba(0,0,0,.05));
  blockquote {
    border-color: #ddd;
    border-color: rgba(0,0,0,.15);
  }
}

.calcHeight(@adjustment:50px){
  height: 100%;
  height: -webkit-calc(~'100% - '@adjustment);
  height: -moz-calc(~'100% - '@adjustment);
  height: calc(~'100% - '@adjustment);
}