[LayaAir 2.0]HtmlDivElement宽度设置错误

export default class HtmlTest extends Laya.Sprite {

    constructor() {

        super();

        this.init();

    }

    init() {

        this.bg = new Laya.Sprite();

        this.bg.graphics.drawRect(0, 0, 200, 200, '#ccc');

        this.addChild(this.bg);

        this.htmlTxt = new Laya.HTMLDivElement();

        this.htmlTxt.style.fontSize = 20;

        this.htmlTxt.style.width = 200;

        this.htmlTxt.style.borderColor = '#000';

        this.htmlTxt.style.align = 'center';

        this.htmlTxt.innerHTML = 'test word<br/>1223';

        this.addChild(this.htmlTxt);

    }

}