高斯模糊的文字。
let blurLabel1 = PHBlurLabel()
blurLabel1.font = UIFont.systemFont(ofSize: 20)
blurLabel1.text = "Hello World"
blurLabel1.textColor = .black
view.addSubview(blurLabel1)
blurLabel1.snp.makeConstraints { make in
make.top.equalTo(300)
make.centerX.equalToSuperview()
}