.file-uploads {
  overflow: hidden;
  position: relative;
  text-align: center;
  display: inline-block;
}
.file-uploads.file-uploads-html4 input[type="file"] {
  opacity: 0;
  font-size: 20em;
  z-index: 1;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  position: absolute;
  width: 100%;
  height: 100%;
}
.file-uploads.file-uploads-html5 input[type="file"] {
  overflow: hidden;
  position: fixed;
  width: 1px;
  height: 1px;
  z-index: -1;
  opacity: 0;
}