.postal-distance-box {
    max-width: 450px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background: #f9f9f9;
    text-align: center;
}

.postal-distance-box input,
.postal-distance-box select {
    width: 90%;
    padding: 8px;
    margin: 5px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.postal-distance-box button {
    padding: 10px 15px;
    margin: 5px;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.postal-distance-box button:hover {
    background-color: #005177;
}

#distance-map {
    height: 300px;
    margin-top: 15px;
}