jitsi-meet/css/_side_toolbar_container.scss

/**
 * Toolbar side panel main container element.
 */
#sideToolbarContainer {
    background-color: rgba(0,0,0,0.8);
    height: 100%;
    left: $defaultToolbarSize;
    max-width: $sidebarWidth;
    overflow: hidden;
    position: absolute;
    top: 0;
    width: 0;
    z-index: 800;

    /**
     * Labels inside the side panel.
     */
    label {
        color: $baseLight;
    }

    /**
     * Form elements and blocks.
     */
    input, select, a,
    .sideToolbarBlock, .form-control, .button-control {
        display: block;
        margin-top: 15px;
        margin-left: 10%;
        width: 80%;
    }

    /**
     * Specify styling of elements inside a block.
     */
    .sideToolbarBlock {
        input, button, a, select {
            margin-left: 0;
            margin-top: 5px;
            width: 100%;
        }
        input[type='checkbox'] {
            display: inline;
            width: auto !important;
            > label {
                margin-top: 5px;
                width: 80%;
            }
        }
    }

    /**
     * Inner container, for example contact list, settings or profile.
     */
    .sideToolbarContainer__inner {
        display: none;
        height: 100%;
        width: $sidebarWidth;
        position: absolute;
        box-sizing: border-box;
        color: #FFF;

        .input-control {
            border: 0;
        }

        /**
         * Titles and subtitles of inner containers.
         */
        div.title, div.subTitle {
            margin: 24px 0 11px;
        }

        /**
         * Main title size.
         */
        div.title {
            color: $toolbarTitleColor;
            text-align: center;
            font-size: $toolbarTitleFontSize;
        }

        /**
         * Subtitle specific properties.
         */
        div.subTitle {
            color: $defaultSideBarFontColor !important;
            font-size: 11px;
            font-weight: 500;
            margin-left: 10%;
            text-align: left;
        }

        /**
         * First element after a title.
         */
        .first {
            margin-top: 0 !important;
        }

        /**
         * Buttons in the side toolbar container.
         */
        .button-control {
            margin: 9px 0;
            width: 100%;
        }
    }
}

#device_settings {
    width : auto !important;
    text-align: center;
}

/**
 * Profile
 */
.auth_container {
    ul {
        padding: 0;

        li {
            list-style-type: none;

            a.authButton {
                width: 160px;
                margin: 10px 20px;
                padding: 3px 29px;
                box-sizing: border-box;
                background-color: #06a5df;
                border-radius: 4px;
                cursor: pointer;
                color: $defaultColor;
                text-decoration: none;
                text-align: center;
            }
        }
    }
}