matrix-dimension/web/style/_riot.scss

// The CSS for the Riot breadcrumb is specified here to ensure that it's style can be overridden.
// In it's current position (as a component), the component-level stylesheet cannot access the
// elements, so we specify it in a more generic location.

.dimension-breadcrumb {
  .fluid-bread {
    padding: 0;
  }

  .fluid-bread .container {
    padding: 0;
    margin: 0;
  }

  .fluid-bread .container .breadcrumb {
    padding: 0;
    margin: 0;
  }

  .fluid-bread .breadcrumb-item a:hover {
    text-decoration: none;
  }

  font-size: 13px;
  display: block;
  padding-top: 4px;
}

.header .quickAction .closeButton .scalarClose {
  position: absolute;
  top: 25px;
  right: 15px;
}