body, html {
  width: 100%;
  height: 100%;
  background-color: #0b0b0b;
  overflow-x: hidden;
}

.galerie-box {
  position: relative;
  display: block;
  max-width: 650px;
  margin: 0 auto;
}
.galerie-box:focus {
  outline: none;
}