message: make the open button smaller
diff: .file-input {
  - height: 32px;
  + height: 24px;
  }
  .file-input > input {
  }
  .file-input > label {
  - width: 30px;
  - height: 30px;
  + width: 22px;
  + height: 22px;
  border: 1px solid transparent;
  display: inline-block;
  position: relative;
  