.upsell-popup{
position:fixed;
inset:0;
background:rgba(0,0,0,.55);
display:flex;
justify-content:center;
align-items:center;
z-index:99999;
}

.upsell-popup.hidden{
display:none;
}

.upsell-box{
background:#fff;
width:430px;
padding:30px;
border-radius:12px;
text-align:center;
position:relative;
}

.upsell-box img{
width:220px;
margin:auto;
display:block;
}

.upsell-close{
position:absolute;
top:15px;
right:15px;
border:none;
background:none;
font-size:28px;
cursor:pointer;
}

#upsell-add{
width:100%;
padding:14px;
background:#000;
color:#fff;
margin-top:15px;
cursor:pointer;
}

#upsell-skip{
margin-top:10px;
width:100%;
}