element-web-Github/res/css/views/rooms/wysiwyg_composer/_SendWysiwygComposer.pcss

/*
Copyright 2024 New Vector Ltd.
Copyright 2022 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_SendWysiwygComposer {
    flex: 1;
    display: flex;
    flex-direction: column;
    font: var(--cpd-font-body-md-regular);
    /* fixed line height to prevent emoji from being taller than text */
    line-height: $font-18px;
    justify-content: center;
    margin-right: 13px;
    gap: 8px;

    .mx_FormattingButtons {
        margin-left: 12px;
    }

    .mx_WysiwygComposer_Editor {
        border: 1px solid;
        border-color: $quinary-content;
        padding: 6px 11px 6px 12px;
        display: flex;
        align-items: flex-end;
        gap: 10px;

        .mx_E2EIcon {
            margin: 0 0 7px 0;
            width: 12px;
            height: 12px;
        }

        &[data-is-expanded="true"] {
            border-radius: 14px;

            .mx_WysiwygComposer_Editor_container {
                margin-top: 3px;
                margin-bottom: 3px;
            }
        }

        &[data-is-expanded="false"] {
            border-radius: 40px;
        }

        .mx_WysiwygComposer_Editor_container {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 22px;
            margin-bottom: 2px;
            /* don't grow wider than available space */
            width: 0;

            .mx_WysiwygComposer_Editor_content {
                /* this will center the contenteditable */
                /* in it's parent vertically */
                /* while keeping the autocomplete at the top */
                /* of the composer. The parent needs to be a flex container for this to work. */
                margin: auto 0;
                /* the line height is $font-22px (set in _Editor.pcss) and we want to display 16 lines */
                max-height: calc(16 * $font-22px);
                overflow-y: auto;
            }
        }
    }
}

.mx_SendWysiwygComposer-focused {
    .mx_WysiwygComposer_Editor {
        border-color: $quaternary-content;
    }
}