chamilo-lms2/app/Resources/public/assets/jquery-file-upload/css/jquery.fileupload.css

@charset "UTF-8";
/*
 * jQuery File Upload Plugin CSS
 * https://github.com/blueimp/jQuery-File-Upload
 *
 * Copyright 2013, Sebastian Tschan
 * https://blueimp.net
 *
 * Licensed under the MIT license:
 * https://opensource.org/licenses/MIT
 */

.fileinput-button {
  position: relative;
  overflow: hidden;
  display: inline-block;
}
.fileinput-button input {
  position: absolute;
  top: 0;
  right: 0;
  margin: 0;
  opacity: 0;
  -ms-filter: 'alpha(opacity=0)';
  font-size: 200px !important;
  direction: ltr;
  cursor: pointer;
}

/* Fixes for IE < 8 */
@media screen\9 {
  .fileinput-button input {
    filter: alpha(opacity=0);
    font-size: 100%;
    height: 100%;
  }
}