element-web-Github/res/css/structures/_MatrixChat.pcss

/*
Copyright 2024 New Vector Ltd.
Copyright 2015, 2016 OpenMarket Ltd

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

.mx_MatrixChat_splash {
    position: relative;
    height: 100%;
}

.mx_MatrixChat_wrapper {
    display: flex;

    width: 100%;
    height: 100%;
}

.mx_MatrixToolbar {
    order: 1;

    height: 40px;
}

.mx_MatrixChat {
    position: relative;
    width: 100%;
    height: 100%;

    display: flex;

    flex: 1;
    min-height: 0;
}

/* not the left panel, and not the resize handle, so the roomview and friends */
.mx_MatrixChat > :not(.mx_LeftPanel):not(.mx_SpacePanel):not(.mx_ResizeHandle):not(.mx_LeftPanel_outerWrapper) {
    background-color: $background;

    flex: 1 1 0;
    min-width: 0;

    /* To fix https://github.com/vector-im/element-web/issues/3298 where Safari
       needed height 100% all the way down to the HomePage. Height does not
       have to be auto, empirically.
    */
    height: 100%;
}

.mx_MatrixChat > .mx_ResizeHandle--horizontal:hover {
    position: relative;

    &::before {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);

        height: 64px; /* to match width of the ones on roomlist */
        width: 4px;
        border-radius: 4px;

        content: " ";

        background-color: $primary-content;
        opacity: 0.8;
    }
}