atom/static/text-editor.less

atom-text-editor {
  position: relative;

  .scroll-view {
    position: absolute;
    contain: strict;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    overflow: auto;
    background-color: inherit;
  }

  .gutter-container {
    float: left;
    width: min-content;
    background-color: inherit;
  }

  .line-numbers {
    width: max-content;
    background-color: inherit;
    contain: content;
  }

  .line-number {
    width: min-content;
    padding-left: .5em;
    white-space: nowrap;
    opacity: 0.6;

    .icon-right {
      .octicon(chevron-down, 0.8em);
      display: inline-block;
      visibility: hidden;
      opacity: .6;
      padding: 0 .4em;

      &::before {
        text-align: center;
      }
    }
  }

  .lines {
    contain: strict;
    background-color: inherit;
    float: left;
    will-change: transform;
    overflow: hidden;
  }
}