body{
font-family:Arial;
background:#f2f5f9;
display:flex;
justify-content:center;
align-items:center;
height:100vh;
}
.box{
background:white;
padding:40px;
border-radius:20px;
box-shadow:0 5px 25px #ccc;
text-align:center;
}
button{
background:#0066ff;
color:white;
border:0;
padding:12px 25px;
border-radius:10px;
cursor:pointer;
}