body{
     display:flex;
     justify-content:center; 
     align-items:center;
     height:100vh;
     font-family:Arial;
     background:#f4f4f4;
}
    .box{
        background:white;
        padding:20px;
        border-radius:10px;
        text-align:center;
        box-shadow:0 0 10px rgba(0,0,0,0.2);
        }
    input {
        padding:10px;
        margin:10px 0;
        text-align:center;
    }
    button {
        padding:10px 15px;
         margin:5px;
          border:none;
           border-radius:5px;
            cursor:pointer;
             background:#007bff;
              color:white;
            }
    button:hover {
        background:#0056b3;
    }