picocss/scss/layout/_scroller.scss

/**
 * Horizontal scroller (<figure>)
 */

// Wrapper to make any content responsive across all viewports
figure {
  display: block;
  margin:0;
  padding: 0;
  overflow-x: auto;

  figcaption {
    padding: ($spacing-gutter/2) 0;
    color: var(--muted-text);
  }
}