<ReactModal
    isOpen={this.props.isLoading}
    contentLabel="Modal"
    style={{
        overlay : {
        },
        content : {
            position                   : 'absolute',
            top                        : '0px',
            left                       : '0px',
            right                      : '0px',
            bottom                     : '0px',
            border                     : 'none',
            background                 : '#fff',
            overflow                   : 'auto',
            WebkitOverflowScrolling    : 'touch',
            outline                    : 'none',
            backgroundColor            : 'rgba(200, 200, 200, 0.85)'
        }
    }}
    portalClassName="ReactModalPortal"
    overlayClassName="ReactModal__Overlay"
    className="ReactModal__Content"
    ariaHideApp={false}
    role="dialog"
    parentSelector={() => document.body}
>
    <RingLoader color="#9099d4" size="64px" margin="4em" styleName='loader-style'/>
</ReactModal>


.loader-style {
    width: 64px;
    display: block;
    margin: auto;
}