#popupbox{
margin: 0; 
margin-left: 40%; 
margin-right: 40%;
margin-top: 50px; 
padding-top: 10px; 
width: 20%; 
height: 180px; 
position: fixed; 
top: 100px;
background: #FBFBF0; 
border: solid #000000 2px; 
z-index: 9; 
font-family: arial; 
visibility: hidden; 
}