style.css

body {
  font-family: 'Montserrat', sans-serif;
  font-size: 14pt;
  color: #333;
}

.content-area {
  max-width: 1200px;
  margin: 3em auto;
}

.filter-area {
  margin-top: 3em;
  margin-bottom: 1em;
  text-align: center;
}

.filter-area button, .filter-area button:focus, .filter-area button:active {
  background: none;
  border: none;
  outline: none;
  padding: 0;
  font-size: 80%;
  margin: 0 0.75em;
  color: #555;
  font-variant: small-caps;
  cursor: pointer;
}

.filter-area button.active {
  border-bottom: 2px solid #555;
}

.grid {
  margin: 0 auto;
}

.grid-item, .grid-item img {
  width: 400px;
  height: 400px;
}

.contact-area {
  text-align: center;
  margin-bottom: 2em;
}

h1 {
  text-align: center;
}

.contact-area a {
  color: #9f1f63;
  text-decoration: none;
}

.contact-area i {
  color: #888;
  margin: 0 0.5em;
}

a {
  outline: none;
}

.lb-data .lb-number {
  color: #eee;
}

.lb-nav a.lb-next, .lb-nav a.lb-prev {
  opacity: 0.25;
}

.image-count-overlay {
  position: absolute;
  bottom: 0.5em;
  right: 0.5em;
  color: white;
  text-shadow: 1px 1px 1px #333, -1px 1px 1px #333, 1px -1px 1px #333, -1px -1px 1px #333;
  font-size: small;
}

@media only screen and (max-device-width: 410px) {
  .filter-area button {
    margin: 0 0.25em;
  }

  .grid-item, .grid-item img {
    width: 100%;
    height: auto;
  }
}