body {
margin: 0;
font-family: Arial, sans-serif;
background-color: #f5f5f5;
min-height: 100vh;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
padding: 20px;
}
.payment-box {
background-color: white;
padding: 30px;
border-radius: 15px;
box-shadow: 0 5px 20px rgba(0,0,0,0.1);
width: 100%;
max-width: 420px;
}
.payment-box-box h2 {
margin-top: 0;
margin-bottom: 10px;
}
.payment-box label {
display: block;
margin-bottom: 6px;
font-weight: 600;
}
.payment-box input {
width: 100%;
padding: 12px;
border: 1px solid #cccccc;
border-radius: 8px;
margin-bottom: 15px;
box-sizing: border-box;
}
.payment-box button {
width: 100%;
padding: 14px;
border: none;
border-radius: 8px;
font-size:  16;
cursor: pointer;
}