body {
  background: url(/assets/bg/planar-bridge.jpg) center/cover no-repeat fixed;
}

.big-page-buttons li {
  background-color: rgba(78, 117, 183, 0.2);
  border: 1px solid #335e77;
}
.big-page-buttons li:hover {
  background-color: rgba(78, 117, 183, 0.3);
}