html {
    overflow-y: scroll;
}

.main-content {
    text-align: justify;
}

.main-content img {
    max-width: 100%;
}

h1, h2, h3, h4, h5, h6 {
    text-align: left;
}

.gio-collapsible {
    flex-wrap: nowrap;
}

.gio-collapsed {
    display: none;
}

.gio-collapse-placeholder {
    width: 16px;
    display: inline-block;
    text-align: center;
}

div.ytplayer-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    background-color: #e9ecef;
    margin-bottom: 30px;
}

div.dmplayer-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    background-color: #e9ecef;
    margin-bottom: 30px;
}

div.vimeo-player-wrapper {
    position: relative;
    width: 100%;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    background-color: #e9ecef;
    margin-bottom: 30px;
}

div.vimeo-player-wrapper::before {
    grid-area: 1 / 1;
    content: "";
    padding-bottom: var(--vimeo-player-ratio);
}

div.vimeo-player-content {
    grid-area: 1 / 1;
}

.page-icon {
    width: 20px;
    height: 20px;
    margin-right: 5px;
}

.done::before {
    content: '✔';
}

.not-done {
    font-weight: bold;
}