如何在iOS中为网页视图设置特定大小的自定义字体？

if let customFont = UIFont(name: "CustomFont", size: 16) {
    // 设置网页视图的字体
    webView?.scrollView.contentScaleFactor = 1
    webView?.scrollView.contentSize = CGSize(width: webView?.frame.size.width ?? 0, height: webView?.scrollView.contentSize.height ?? 0)
    webView?.scrollView.contentInsetAdjustmentBehavior = .never
    webView?.scrollView.showsVerticalScrollIndicator = false
    webView?.scrollView.showsHorizontalScrollIndicator = false
    webView?.scrollView.bounces = false
    webView?.scrollView.isScrollEnabled = false
    webView?.scrollView.addSubview(webView!)
    webView?.scrollView.addSubview(customFont)
}