body{
    background:#111827;
    color:white;
    font-family:Arial,sans-serif;
    text-align:center;
    padding-top:100px;
}

.box{
    max-width:600px;
    margin:auto;
}

input{
    padding:10px;
    width:250px;
}

button{
    padding:10px 20px;
    cursor:pointer;
}