#bmpModal{
 position:fixed;
 top:0;left:0;
 width:100%;height:100%;
 background:rgba(0,0,0,.6);
 display:flex;
 justify-content:center;
 align-items:center;
}
.bmp-box{
 background:#fff;
 padding:20px;
 width:95%;
 max-width:420px;
 border-radius:10px;
}