<style>
  .centered-gallery {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh; /* Full screen height */
  }

  .simple_gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }

  .simple_gallery img {
    max-width: 300px;
    width: 100%;
    height: auto;
  }
</style>