html { width:100%; height:100%; }      
/*body { width:100%; height:100%; margin: 0px; padding: 0px; font-size:9pt; }      */
.SLB_center { cursor:pointer; visibility:hidden; border: solid 4px #000000; }      
.SLB_close { cursor: pointer; display:none; font-family: verdana,tahoma; font-size: 9pt; background-color:#000000; color: #ffffff; padding-bottom: 4px; }      
.SLB_caption { cursor: pointer; display:none; font-family: verdana,tahoma; font-size: 9pt; background-color:#000000; color: #ffffff; padding-bottom: 4px; }      
#SLB_loading { cursor: pointer; display:none; z-index: 99998; position:absolute; font-family: verdana,tahoma; font-size: 9pt;}      
#air_booking_cavas {
  

   position:absolute;
   top: 50%;
   left: 50%;
   width: 400px;
   height: 200px;
   margin-top: -100px; /*set to a negative number 1/2 of your height*/
   margin-left: -200px; /*set to a negative number 1/2 of your width*/
   border: 0px solid #000000;
 
   padding: 5 5 5 5;
   z-index: 99999;
   text-align:center;
 
  }