#overlay {
          position: fixed;
          display: none;
          width: 100%;
          height: 100%;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background-color: rgba(0,0,0,0.5);
          z-index: 2;
          cursor: pointer;
        }
#text{
    position: absolute;
    top: 50%;
    left: 50%;
    font-size: 30px;
    color: white;
    transform: translate(-50%,-50%);
    -ms-transform: translate(-50%,-50%);
  }