.cookie-panel {
  position: absolute;
  top: 100px;
  width: 100%;
  z-index: 10;
  display: none;
}
.cookie-panel.active {
  display: block; 
}
.cookie-panel-inner {
  box-shadow: 0 0 5px rgba(0,0,0,.5)
}

@media (min-width: 769px) {
  .cookie-panel {
    position: fixed;
    top: auto;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    min-width: 600px;
    max-width: 900px; 
  } 
  .cookie-panel-inner {
    box-shadow: 0 0 5px rgba(0,0,0,.5)
  }
}