/*! * Bootstrap v3.4.1 (https://getbootstrap.com/) * Copyright 2011-2019 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) */ // Opacity .opacity(@opacity) { @opacity-ie: (@opacity * 100); // IE8 filter filter: ~"alpha(opacity=@{opacity-ie})"; opacity: @opacity; }