body{
font-family:Arial;
background:#f3f3f3;
text-align:center;
}

.container{
margin:auto;
max-width:600px;
padding:50px;
}

input{
width:100%;
padding:15px;
font-size:16px;
margin-bottom:10px;
}

button{
padding:15px 30px;
background:#0066ff;
color:white;
border:none;
cursor:pointer;
}

#result{
margin-top:20px;
}