.masthead {
  padding: 0;
  background: #000;
}
.masthead a {
  width: min(1080px,100%);
}
.masthead img {
  background: #000;
}
.box-image-link {
  display: block;
  flex: 0 0 auto;
}
.box-image-link img {
  display: block;
  filter: drop-shadow(0 3px 7px rgba(36,35,33,.16));
}