converse.js/sass/_minimized_chats.scss

#conversejs.converse-overlayed {
    #minimized-chats {
        order: 100;

        width: var(--minimized-chats-width);
        margin-bottom: 0;
        border-top-left-radius: var(--chatbox-border-radius);
        border-top-right-radius: var(--chatbox-border-radius);
        color: var(--inverse-link-color);
        margin-right: var(--chat-gutter);
        padding: 0;

        .badge {
            bottom: 8px;
            border: 1px solid var(--overlayed-badge-color);
        }

        #toggle-minimized-chats {
            border-top-left-radius: var(--chatbox-border-radius);
            border-top-right-radius: var(--chatbox-border-radius);
            background-color: var(--link-color);
            padding: 1em 0 0 0;
            text-align: center;
            color: white;
            white-space: nowrap;
            overflow-y: hidden;
            text-overflow: ellipsis;
            display: block;
            height: 45px;
            width: 9em;
        }

        a.restore-chat {
            cursor: pointer;
            padding: 1px 0 1px 5px;
            color: var(--chat-head-text-color);
            line-height: 15px;
            display: block;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            &:hover {
                text-decoration: none;
            }
        }

        a.restore-chat:visited {
            color: var(--chat-head-text-color);
        }

        .minimized-chats-flyout {
            flex-direction: column-reverse;
            bottom: 45px;
            width: var(--minimized-chats-width);

            .chat-head {
                min-height: 0;
                padding: 0.3em;
                border-radius: var(--chatbox-border-radius);
                height: 35px;
                margin-bottom: 0.2em;
                width: 100%;
                max-width: 9em;
                flex-wrap: nowrap;
            }
            &.minimized {
                height: auto;
            }
        }

        .unread-message-count {
            font-weight: bold;
            background-color: white;
            border: 1px solid;
            text-shadow: 1px 1px 0 var(--text-shadow-color);
            color: var(--warning-color);
            border-radius: 5px;
            padding: 2px 4px;
            font-size: 16px;
            text-align: center;
            position: absolute;
            right: 116px;
            bottom: 10px;
        }
        .unread-message-count-hidden,
        .chat-head-message-count-hidden {
            display: none;
        }
    }
}