.image-block a {
  display: inline-block;
}

.image-block p {
  margin: 0;
}

.image-block img {
  display: block;
  width: 100%;
}

@media(width >= 1024px) {
  .section.centered-content .image-block.image-small img {
    display: block;
    max-width: 25%;
  }
  
  .section.centered-content .image-block.image-medium img {
    display: block;
    max-width: 50%;
  }
  
  .section.centered-content .image-block.image-large img {
    display: block;
    max-width: 100%;
  }
}