.oooa-appointment-form {
    max-width: 400px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: #f9f9f9;
}
.oooa-appointment-form h3 {
    margin-top: 0;
    color: #333;
}
.oooa-appointment-form label {
    display: block;
    margin: 10px 0 5px;
}
.oooa-appointment-form input[type="text"],
.oooa-appointment-form input[type="email"],
.oooa-appointment-form input[type="date"],
.oooa-appointment-form input[type="time"],
.oooa-appointment-form select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
.oooa-appointment-form input[type="submit"] {
    background: #0073aa;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
.oooa-appointment-form input[type="submit"]:hover {
    background: #005177;
}