zulip/static/styles/informational-overlays.css

.informational-overlays .overlay-content {
    /* because zoom breaks at 525px perhaps due to rounding errors, so add a
       trivial amount of width so it doesn't break. */
    width: 550px;
    margin: 0 auto;
    position: relative;
    top: calc((30vh - 50px) / 2);
    border-radius: 4px;
    overflow: hidden;

    background-color: hsl(0, 0%, 100%);
}

.informational-overlays .overlay-tabs {
    padding: 10px 0px;
    border-bottom: 1px solid hsla(0, 0%, 0%, 0.2);
}

.informational-overlays .overlay-tabs .tab-switcher {
    margin-left: 15px;
}

.informational-overlays .overlay-tabs .exit {
    float: right;
    font-size: 1.5rem;
    color: hsl(0, 0%, 66%);
    font-weight: 600;
    margin: 1px 15px;
}

.informational-overlays .overlay-modal {
    padding-bottom: 10px;
}

.informational-overlays .overlay-modal .modal-body {
    height: 70vh;
    text-align: center;
    outline: none;
}

.informational-overlays .overlay-modal .modal-header h3 {
    font-weight: 300;
}

.informational-overlays .overlay-modal .modal-body th {
    font-weight: 400;
}

.informational-overlays td.operator {
    font-size: 0.9em;
}

.hotkeys_table {
    width: 247px;
    /* this is because some generic setting for striped tables in settings.css
       overrides this. */
    margin: 5px !important;
    font-size: 90%;
    display: inline-block;
    vertical-align: top;
}

.hotkeys_table:not(.hotkeys_full_table) th {
    width: 245px;
}

.hotkeys_table .hotkey {
    font-family: Monaco, Menlo, Consolas, "Courier New", monospace;
    text-align: right;
    font-weight: bold;
    font-size: 90%;
    white-space: nowrap;
}

.hotkeys_full_table {
    display: table;
    width: calc(100% - 11px) !important;
}

.hotkeys_full_table td.hotkey {
    /* this is to keep the <td> for hotkey the same width as the two-col layout. */
    width: 131px;
}

#keyboard-shortcuts table {
    margin-bottom: 10px;
}

@media only screen and (max-width: 768px) {
    .informational-overlays .overlay-content {
        width: calc(100% - 20px);
    }

    .informational-overlays .tab-switcher.large .ind-tab {
        width: 100%;
    }

    .informational-overlays .tab-switcher {
        display: flex;
    }

    .informational-overlays .table.table-condensed.table-striped {
        margin-left: auto;
        margin-right: auto;
    }

    .informational-overlays .hotkeys_table {
        width: 100%;
        display: table;
    }
}