message: fix(fileuploader): modified to decrease amount of styling
diff: -//
  -// Copyright IBM Corp. 2016, 2018
  -//
  -// This source code is licensed under the Apache-2.0 license found in the
  -// LICENSE file in the root directory of this source tree.
  -//
  -
  -@import '@carbon/layout/scss/convert';
  -
  -//-----------------------------
  -// File Uploader (expressive)
  -//-----------------------------
  -
  /// File uploader styles (expressive)
  /// @access private
  /// @group file-uploader-expressive
  .#{$prefix}--file__state-container .#{$prefix}--btn--tertiary {
  width: rem(142px);
  }
  - .#{$prefix}--file__selected-file {
  - display: grid;
  - grid-gap: 1rem;
  - grid-template-columns: 1fr auto;
  - grid-auto-rows: auto;
  - align-items: center;
  - min-height: 3rem;
  - max-width: 20rem;
  - margin-bottom: 0.5rem;
  - background-color: #f4f4f4;
  - word-break: break-word;
  - }
  - .#{$prefix}--file__selected-file--invalid {
  - outline: 2px solid #da1e28;
  - outline-offset: -2px;
  - padding: 1rem 0;
  - }
  .#{$prefix}--file__state-container .#{$prefix}--file-invalid {
  - height: 1.25rem;
  - width: 1.25rem;
  + height: rem(20px);
  + width: rem(20px);
  }
  }
  