.announcement {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2;
}
.announcement a {
  display: inline-block;
  pointer-events: auto;
}
.announcement img {
  width: auto;
  height: auto;
  max-width: 90vw;
}
@media (max-width: 767px) {
  body.page-home nav#main > div.navigation > a:first-child img {
    width: 35%;
  }
}