#d0smallerpage .d0pagebox {min-height: 550px;}

.d0blackborderbox {min-height: 485px;}

 .d0poemgrid {
    display: grid;
    grid-template-columns: 1fr 1fr;   /* left column | right column */
    grid-template-rows: 1fr 1fr;      /* two equal rows */
    gap: 20px;
    max-width: 1500px;
    margin: 0 auto;
    min-height: 600px;
  }
 
  /* Left box spans both rows */
  .d0poemgrid .d0left {
    grid-column: 1;
    grid-row: 1 / span 2;
  }
 
  /* Top-right box */
  .d0poemgrid .d0topright {
    grid-column: 2;
    grid-row: 1;
  }
 
  /* Bottom-right wrapper holds two boxes side by side */
  .d0poemgrid .d0bottomright {
    grid-column: 2;
    grid-row: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
 
  /* ===== Box styling (based on your existing classes) ===== */
  .d0imgbox01, .d0imgbox02, .d0imgbox03, .d0imgbox04 {
    padding: 0px;
    min-height: 150px;
    height: 100%;
    display: block;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    border-radius: 6px;
    overflow: hidden;
    box-sizing: border-box;
  }
 
.d0imgbox01 { background-image: url(/shared/images/content/bus_58386/Poems-for-Children-Imgbox01.webp);}
.d0imgbox02 { background-image: url(/shared/images/content/bus_58386/Poems-for-Children-Imgbox02.webp);}
.d0imgbox03 { background-image: url(/shared/images/content/bus_58386/Poems-for-Children-Imgbox03.webp);}
.d0imgbox04 { background-image: url(/shared/images/content/bus_58386/Poems-for-Children-Imgbox04.webp);}
 
  .d0overlaybox, .d0overlaybox2 {
    background-color: rgba(0, 0, 0, 0.4);
    padding: 20px;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    justify-content: flex-end;
    box-sizing: border-box;
    color: #ddf0f7;
    border: 3px solid transparent; 
    transition: ease-in-out 0.5s; 
    cursor: pointer;
  }
 
  .d0overlaybox:hover, .d0overlaybox2:hover {border: 3px solid #ff6c65; outline-offset: 15px;}

  .d0overlaybox h3, .d0overlaybox2 h3 {
    margin: 0 0 8px 0;
  }
  .d0overlaybox p, .d0overlaybox2 p {
    margin: 0;
  }
 
  /* ===== Mobile: stack everything in one column ===== */
  @media (max-width: 799px) {
    .d0poemgrid {
      grid-template-columns: 1fr;
      grid-template-rows: auto;
    }
    .d0poemgrid .d0left,
    .d0poemgrid .d0topright {
      grid-column: 1;
      grid-row: auto;
    }
    .d0poemgrid .d0bottomright {
      grid-column: 1;
      grid-row: auto;
      grid-template-columns: 1fr 1fr; /* keep the pair side by side even on mobile */
    }
    .d0imgbox01, .d0imgbox02, .d0imgbox03, .d0imgbox04 {
      min-height: 200px;
    }
  }
 
  /* Optional: stack the bottom pair too on very small screens */
  @media (max-width: 480px) {
    .d0poemgrid .d0bottomright {
      grid-template-columns: 1fr;
    }
  }