element-web-Github/res/css/views/right_panel/_PinnedMessagesCard.pcss

/*
Copyright 2024 New Vector Ltd.
Copyright 2021 The Matrix.org Foundation C.I.C.

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

.mx_PinnedMessagesCard {
    --unpin-height: 76px;

    .mx_PinnedMessagesCard_wrapper {
        display: flex;
        flex-direction: column;
        padding: var(--cpd-space-4x);
        gap: var(--cpd-space-6x);
        overflow-y: auto;

        .mx_PinnedMessagesCard_Separator {
            min-height: 1px;
            /* Override default compound value */
            margin-block: 0;
        }
    }

    .mx_PinnedMessagesCard_wrapper_unpin_all {
        /* Remove the unpin all button height and the top and bottom padding  */
        height: calc(100% - var(--unpin-height) - calc(var(--cpd-space-4x) * 2));
    }

    .mx_PinnedMessagesCard_unpin {
        /* Make it float at the bottom of the unpin panel */
        position: absolute;
        bottom: 0;
        width: 100%;
        height: var(--unpin-height);
        display: flex;
        justify-content: center;
        align-items: center;
        box-shadow: 0 4px 24px 0 rgba(27, 29, 34, 0.1);
        background: var(--cpd-color-bg-canvas-default);
    }

    .mx_EventTile_body {
        word-break: break-word;
    }
}