element-web/res/css/structures/_GenericDropdownMenu.scss

/*
Copyright 2022 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

.mx_GenericDropdownMenu_button {
    padding: 3px 4px 3px 8px;
    border-radius: 4px;
    line-height: 1.5;
    user-select: none;
    font-size: $font-12px;
    color: $secondary-content;
}

.mx_GenericDropdownMenu_button:hover,
.mx_GenericDropdownMenu_button[aria-expanded=true] {
    background: $quinary-content;
}

.mx_GenericDropdownMenu_button::before {
    content: "";
    width: 18px;
    height: 18px;
    background: currentColor;
    mask-image: url("$(res)/img/feather-customised/chevron-down.svg");
    mask-size: 100%;
    mask-repeat: no-repeat;
    float: right;
}

.mx_ContextualMenu_wrapper.mx_GenericDropdownMenu_wrapper {
    .mx_ContextualMenu {
        position: initial;

        font-size: $font-12px;
        color: $secondary-content;
        padding-top: 10px;
        padding-bottom: 10px;

        border: 1px solid $quinary-content;
        box-shadow: 0 1px 3px rgba(23, 25, 28, 0.05);
    }

    .mx_ContextualMenu_chevron_top {
        left: auto;
        right: 22px;
        border-bottom-color: $quinary-content;

        &::after {
            content: "";
            border: inherit;
            border-bottom-color: $menu-bg-color;
            position: absolute;
            top: 1px;
            left: -8px;
        }
    }

    .mx_GenericDropdownMenu_divider {
        display: block;
        height: 0;
        margin-left: 4px;
        margin-right: 19px;
        border-top: 1px solid $system;
    }

    .mx_GenericDropdownMenu_Option {
        display: flex;
        flex-grow: 1;
        flex-direction: row;
        align-items: center;
        padding: 10px 20px 10px 30px;
        position: relative;

        > .mx_GenericDropdownMenu_Option--label {
            display: flex;
            flex-direction: column;
            flex-grow: 1;

            margin: 0;

            span:first-child {
                color: $primary-content;
                font-weight: $font-semi-bold;
            }
        }

        &.mx_GenericDropdownMenu_Option--header > .mx_GenericDropdownMenu_Option--label span:first-child {
            font-size: $font-15px;
        }

        &.mx_GenericDropdownMenu_Option--item {
            &:hover {
                background-color: $event-selected-color;
            }

            &[aria-checked="true"]::before {
                content: "";
                width: 12px;
                height: 12px;
                margin-left: -20px;
                margin-right: 8px;
                mask-image: url("$(res)/img/feather-customised/check.svg");
                mask-size: 100%;
                mask-repeat: no-repeat;
                background-color: $primary-content;
                display: inline-block;
                vertical-align: middle;
            }
        }
    }
}