<style> .popup{ position:fixed; width:100%; height:100%; left:0px; right:0px; top: 0px; bottom:0px; background-color:rgba(3,3,3,0.8); } .popupWindow{ background-color:white; margin:0px auto; width:40%; min-width:400px; min-height:300px; margin-top:12%; text-align: center; -moz-border-radius: 50px 50px / 50px 50px; border-radius: 50px 50px / 50px 50px; box-shadow: 10px 10px 5px #000; } .popup_txt{ font-size:26px; font-weight:bold; margin:10px; padding-top:100px; color:green; } .popup_img{ maring:10px; } .popup_img_yes,.popup_img_no{ margin:20px; } style>