body{
    font-family:Arial;
    background:#f4f4f4;
}

.box{
    width:400px;
    margin:100px auto;
    background:#fff;
    padding:20px;
    border-radius:10px;
    text-align:center;
}

input{
    width:90%;
    padding:10px;
}

button{
    margin-top:15px;
    padding:10px 20px;
    cursor:pointer;
}