#instructor-joining-form {
    max-width: 600px;
    margin: 0 auto;
}
#instructor-joining-form input,
#instructor-joining-form textarea,
#instructor-joining-form select,
#instructor-joining-form button {
    display: block;
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid #ccc;
}
#instructor-joining-form button {
    background-color: #0073aa;
    color: white;
    cursor: pointer;
}
#instructor-joining-form button:hover {
    background-color: #005177;
}