body{

font-family:Arial;
background:#f5f5f5;
text-align:center;

}

.box{

background:white;
max-width:400px;
margin:auto;
margin-top:40px;
padding:30px;
border-radius:10px;

}

input,select{

width:100%;
padding:12px;
margin-top:10px;

}

button{

background:#16a34a;
color:white;
padding:14px;
border:none;
width:100%;
margin-top:15px;
font-size:16px;
border-radius:5px;

}

#qrcode{

margin-top:20px;
width:200px;

}