body {
    background-color: #1e293b;
    color: #f8fafc;
    min-height: 100vh;
}

#header {
  text-align: center;
  margin: 20px;
  color: #f8fafc;
}

#header h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.burger span {
  background: black;
}

#gallery {
   line-height:0;
   padding: 0 1rem 2rem;
   -webkit-column-count:5; /* split it into 5 columns */
   -webkit-column-gap:5px; /* give it a 5px gap between columns */
   -moz-column-count:5;
   -moz-column-gap:5px;
   column-count:5;
   column-gap:5px;
}

#gallery img {
   width: 100%;
   height: auto;
   margin-bottom:5px; /* to match column gap */
   transition: filter 2s, opacity 2s, transform 2s;
}

@media (max-width: 1200px) {
   #gallery {
    -moz-column-count:    4;
    -webkit-column-count: 4;
    column-count:         4;
   }
}

@media (max-width: 1000px) {
   #gallery {
    -moz-column-count:    3;
    -webkit-column-count: 3;
    column-count:         3;
   }
}

@media (max-width: 800px) {
   #gallery {
    -moz-column-count:    2;
    -webkit-column-count: 2;
    column-count:         2;
   }
}

@media (max-width: 400px) {
   #gallery {
    -moz-column-count:    1;
    -webkit-column-count: 1;
    column-count:         1;
   }
}