    clear: left;
    /* Apply the shared properties of grid items in a single, efficient ruleset. */
    /* Span 1 column, starting in the 1st column from left. */
    /* Span 1 column, starting in the 2nd column from left. */
    /* Span 1 column, starting in the 3rd column from left. */
  }
  .two-sidebars .region-sidebar-second .block {
