* { box-sizing: border-box; }

body {
  margin: 0;
  background-color: #000;
  background-attachment: fixed;
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
}

.page {
  margin: auto;
  width: 50%;
  min-height: 100px;
}

.block img { display: block; width: 100%; }
.block--overlay { background-color: rgba(0, 0, 0, 0.6); }

.row { display: flex; }
.row > a { width: 50%; }

@media (max-width: 992px) {
  .page { width: 100%; }
}