.anti-drop-zone {
  position: absolute;
  bottom: 50%;
  width: 100%;
  background-color: red;
  left: 0%;
  color: white;
  vertical-align: top;
  padding: 1%;
}

.drop-zone {
  position: absolute;
  bottom: 10%;
  width: 100%;
  background-color: black;
  color: white;
  vertical-align: top;
  padding: 1%;
}

.drag-zone {
  position: absolute;
  bottom: 10%;
  width: 100%;
  background-color: black;
  color: white;
  vertical-align: top;
  padding: 1%;
}



.infinite-slide-left {
  animation: 15s infinite;
  -moz-animation-name: slide-left;
  -webkit-animation-name: slide-left;
}

@-moz-keyframes slide-left {
  from {
    margin-left: 100%;
  }
  to {
    margin-left: -100%;
  }
}

@-webkit-keyframes slide-left {
  from {
    margin-left: 100%;
  }
  to {
    margin-left: -100%;
  }
}