body {
  font-family: Arial, sans-serif;
  background: #111;
  color: #fff;
  margin: 0;
  padding: 20px;
}
.gallery {
  column-count: 4;
  column-gap: 10px;
}
.gallery img {
  width: 100%;
  margin-bottom: 10px;
  border-radius: 10px;
  break-inside: avoid;
  display: block;
}
@media (max-width: 1200px) {
  .gallery {
    column-count: 3;
  }
}
@media (max-width: 768px) {
  .gallery {
    column-count: 2;
  }
}
@media (max-width: 480px) {
  .gallery {
    column-count: 1;
  }
}