body {
    background-color: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

.pin-container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.pin-input {
    display: flex;
    justify-content: space-between;
}

.pin {
    width: 15%;
    text-align: center;
}