body{
margin: 0;
}
header{
background-color: #061125;
text-align: center;
padding: 8px;
overflow: hidden;
}
header a{
text-align: center;
color: #fff;
font-size: 22px;
text-decoration: none; 
}
h2{
font-size: 36px;
text-align: center;
}
#gallery {
  max-width: 1600px;
  margin: 24px auto;  
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  padding: 10px;
}

/* Estilo general de las imágenes */
#gallery img {
  width: 100%;
  aspect-ratio: 1 / 1; /* cuadradas perfectas */
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid #ddd;
  background: #f5f5f5;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Efecto al tocar o pasar el mouse */
#gallery img:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 18px rgba(0,0,0,0.15);
}
/* footer */
footer{
background-color: #061125;
text-align: center;
padding: 8px;
}
footer p{
color: #fff;
}

/* 📱 Teléfonos pequeños */
@media (max-width: 480px) {
  #gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 📱 Tablets */
@media (min-width: 481px) and (max-width: 768px) {
  #gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 💻 Computadoras */
@media (min-width: 769px) {
  #gallery {
    grid-template-columns: repeat(4, 1fr);
  }
}