Adding this inline css will allow you to manipulate the border, background and font shown in ALL popups on your page. It is a little harder, maybe impossible, to adjust a single popup as you would need the Id of the specific element and I was unable to isolate it. For “border” you’ll want to adjust “box-shadow”. Border-radius controls rounding of the corners.

.ui-dialog {



  border: 0;



  box-shadow: 0 0 0 6px red;



  -webkit-border-radius: 0;



  -moz-border-radius: 0;



  border-radius: 10px;



   background: white;



  font-size: 13.33px;



  line-height: extract(null,null,13.3px,null, 5);



  box-sizing: content-box;



}

Thanks Raymond. It worked.

Great!