element-web/res/css/structures/_RightPanel.pcss

/*
Copyright 2024 New Vector Ltd.
Copyright 2020 The Matrix.org Foundation C.I.C.
Copyright 2015, 2016 OpenMarket Ltd

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
Please see LICENSE files in the repository root for full details.
*/

.mx_RightPanel {
    overflow-x: hidden;
    flex: 0 0 auto;
    position: relative;
    display: flex;
    flex-direction: column;
    border-left: 1px solid $separator;
    box-sizing: border-box;
    height: 100%;
    contain: strict;
    background-color: var(--cpd-color-bg-canvas-default);

    .mx_RoomView_MessageList {
        padding: 14px 18px; /* top and bottom is 4px smaller to balance with the padding set above */
    }
}

.mx_RightPanel .mx_MemberList,
.mx_RightPanel .mx_MemberInfo {
    order: 2;
    flex: 1 1 0;
}

.mx_RightPanel .mx_RoomView_messagePanelSpinner {
    order: 2;
    margin: auto;
}