.rsvp-form {
    max-width: 90%;
    margin: 0 auto;
    padding: 20px;
    border: none;
    border-radius: 8px;
    background-color: transparent;
    text-align: center;
}
.form-group {
    margin-bottom: 15px;
}
.form-control {
    width: 80%;
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 15px;
    border: 1px solid #575151;
    border-radius: 4px;
    font-size: 16px;
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 4px;
    text-decoration: none;
    background-color: inherit;
    color: white;
    border: none;
    cursor: pointer;
    margin: 15px;
}
.btn:hover {
    background-color: inherit;
}