after{ntent:'塑'}p0 yd31::first-letter{font-size:0}p0 yd31::after{ntent:'飞'}p0 ylz31::after{ntent:attr(ycvk31)}p0 yb931::first-letter{font-size:0}p0 yb931::after{ntent:'览'}p0 y5531::after{ntent:attr(y6