.lesson.certificate .d-none {
    display: none;
}
.lesson.certificate #formAlert {
    animation: fadein 300ms ease-out;
    margin: 20px 0;
}
@keyframes fadein {
    from {
        opacity: 0;
   }
    to {
        opacity: 1;
   }
}
.lesson.certificate label, .lesson.certificate #name {
    display: inline-block;
}
.lesson.certificate label {
    margin-right: 10px;
    font-size: 15px;
}
.lesson.survey .survey-button {
    display: inline-block;
    height: 40px;
    padding: 0 20px;
    color: white;
    border: none;
    background: #35353c;
    text-align: center;
    font-size: 16px;
    font-weight: 700;
    line-height: 40px;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    box-sizing: border-box;
}
.lesson.certificate p, .lesson.survey p {
    font-size: 16px;
}
.lesson.certificate button, .lesson.survey button, .lesson.certificate .survey-button, .lesson.survey .survey-button {
    transition: background 0.3s ease, color 0.15s ease;
    margin-top: 20px;
}
.lesson.certificate button:hover, .lesson.survey button:hover, .lesson.certificate .survey-button:hover, .lesson.survey .survey-button:hover, .lesson.certificate button:active, .lesson.survey button:active, .lesson.certificate .survey-button:active, .lesson.survey .survey-button:active, .lesson.certificate button:focus, .lesson.survey button:focus, .lesson.certificate .survey-button:focus, .lesson.survey .survey-button:focus {
    color: #ecb10f;
}