body{
    font-family:Arial;
    padding:30px;
}

.box{
    margin-left:50px;
    border:1px solid #ddd;
    padding:20px;
    border-radius:10px;
    max-width:600px;
}

input{
    padding:10px;
    margin:8px 0;
}

button{
    background:#28a745;
    color:white;
    border:none;
    padding:12px 25px;
    border-radius:6px;
    cursor:pointer;
}

.price{
    color:red;
    font-size:24px;
    font-weight:bold;
}