gnu-social/public/components/LeftPanel/assets/css/view.css

.section-panel-left {
    position: absolute;
    left: 0;
}

#panel-left-toggle:not(:checked),
#panel-left-toggle:checked {
    position: absolute;
    top: -100%;
}

.panel-left-icon {
    cursor: pointer !important;
    padding-left: var(--s);
    border: 2px solid transparent;
    vertical-align: middle;
}

.profile-navigation {
    display: flex;
    flex-direction: column;
}


/* FEED NAVIGATION / PLUGINS */
.feed-nav {
    margin-bottom: var(--xl);
}

.feed-nav a {
    display: flex;
}

.feed-nav hr {
    flex: 1;
    background: linear-gradient(90deg, var(--accent), transparent);
}

.feed-nav a {
    color: var(--foreground);
}

.feed-nav .active {
    color: var(--foreground);
}

.main-nav a {
    display: flex;
    flex-direction: column;
}

.footer {
    margin-top: auto;
    font-size: var(--unit);
}

.footer ul {
    display: inline-flex;
    flex-wrap: wrap;
    width: 100%;
    justify-content: flex-start;
}

.footer ul li {
    margin-right: 5px;
}

/* > 720p */
@media only screen and (min-width:1281px) {
    .section-panel-left #panel-left-toggle ~ .header-panel {
        left: 0;
    }

    .panel-left-icon {
        opacity: 0;
    }
}

/* > 1080p */
@media only screen and (min-width:1921px) {
    /*
    * Using the Van de Graaf Canon and Tschichold’s recommended 2:3 page-size ratio
    *
    * 50% - (100 * 2/3) / 2 = 33%
    *
    * > .section-panel-left
    * 50 % - 33% = 17%
    */
    .section-panel-left {
        left: 0;
        margin-left: 17vw;
    }
}