.invalid-feedback {
    display: block;
    margin-bottom: 16px;
    padding-left: 15px;
}

.captcha-img {
    border: 2px black solid;
    margin-bottom: 16px;
}
.captcha-img + button#retryButton {
    margin-bottom: 16px;
}
@media (max-width: 767px){
    .group-form-panel {
        margin-bottom: inherit;
    }
}