body{
  margin: 0;
  background: #111;
}

.back-button{
  position: fixed;
  top: 15px;
  left: 15px;
  z-index: 1000;
  color: #1a1aff;
  font-style: italic;
  font-weight: 600;
  text-decoration: none;
  font-size: 16px;
  font-family: Arial, sans-serif;
}

.back-button:hover{
  text-decoration: underline;
}

.galeria{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0;
}

.galeria img{
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}