header {
  background-color: #f8f9fa;
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid #ccc;
  font-family: 'Roboto', sans-serif;
}
header h1 {
  font-size: 24px;
  color: #333;
}
header p {
  font-size: 16px;
  color: #666;
}

#gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  padding: 20px;
  font-family: 'Roboto', sans-serif;
}
.photo {
  position: relative;
}
.photo img {
  width: 200%;
  height: auto;
  display: block;
}
.photo .caption {
  position: absolute;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  width: 100%;
  text-align: center;
  padding: 5px 0;
}

nav button {
  background-color: #fff;
  border: 1px solid #ddd;
  padding: 10px 20px;
  margin: 10px;
  cursor: pointer;
  transition: background-color 0.3s;
  font-family: 'Roboto', sans-serif;
}
nav button:hover {
  background-color: #eee;
}

.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgb(0,0,0,0.9);
  font-family: 'Roboto', sans-serif;
}
.modal-content {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
}
.close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
}
.close:hover,
.close:focus {
  color: #bbb;
  text-decoration: none;
  cursor: pointer;
}
#caption {
  color: #ccc;
  font-size: 16px;
  padding: 15px 20px;
  text-align: center;
  width: 100%;
}

@media (max-width: 600px) {
  #gallery {
      grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}