#promo {
        background: rgba(102, 102, 102, 0.5);
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        display: none;
      }
      #okno {
       
        text-align: center;
        padding: 15px;
		border: 2px solid #999999;
        border-radius: 10px;
        color: #0000cc;
        position: absolute;
        top: 10%;
  left: 10%;
  width: 80%;
 
  padding: 16px;
        background: #fff;
		cursor:pointer;
      }
      #promo:target {display: block;}
      .close {
        display: inline-block;
       
        cursor:pointer;
      }
      .close:hover {background: #e6e6ff;}