body {
  margin: 0;
  font-family: sans-serif;
}

header {
  background-color: #333;
  color: white;
  padding: 16px;
  text-align: center;
}

nav {
  background-color: #222;
  /* TODO: ustaw position dla nav (sticky, top: 0, z-index: 10) */
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 8px 16px;
  display: flex;
  gap: 16px;
}

nav a {
  color: white;
  text-decoration: none;
}

.gallery {
  padding: 16px;
  /* TODO: dodaj clearfix dla .gallery (::after z clear: both) */
}

.photo-item {
  float:left;
  width: 30%;
  margin: 1.5%
}

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

.photo-caption {
  position: absolutnie;
  bottom: 0;
  margin: 0;
  width: 100%;
  padding: 4px 0;
  background-color: #222;
  color: white;
  text-align: center;

}

footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 12px;
  clear: both;
}

@media(max-width: 768px){
  .photo-item {width: 46%;
  float: none;}
}

@media(max-width: 480px){
  .photo-item {width: 96%;
  float: none;}
}