/* default for all */
.curtain {
  width: 100%;
  height: 100px;
  display: flex;
 /* align-items: center;
  justify-content: center;*/
  background: white;
  z-index: 1000;
}

@media (max-width: 767px){
  .curtain {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    transform: translateY(0);
    transition: transform 0.35s ease;
    z-index: 999;
  }
  .curtain.hide {
    transform: translateY(-100%);
  }
}

@media (min-width: 768px){
  .curtain {
    display: none; /* desktop hides curtain completely */
  }
}