Implement multiplication with CSS => mix-blend-mode

Compatibility: It’s pointless to talk too much about this thing. The compatibility of stuff like HTML5 and CSS3 changes all the time. It’s best for us to experiment on the devices we support. If it’s not supported, just think of a way. This thing Just for convenience and fun

All properties:

<span style="color: #800000;">mix-blend-mode: normal;          //正常
mix-blend-mode: multiply;        //正片叠底
mix-blend-mode: screen;          //滤色
mix-blend-mode: overlay;         //叠加
mix-blend-mode: darken;          //变暗
mix-blend-mode: lighten;         //变亮
mix-blend-mode: color-dodge;     //颜色减淡
mix-blend-mode: color-burn;      //颜色加深
mix-blend-mode: hard-light;      //强光
mix-blend-mode: soft-light;      //柔光
mix-blend-mode: difference;      //差值
mix-blend-mode: exclusion;       //排除
mix-blend-mode: hue;             //色相
mix-blend-mode: saturation;      //饱和度
mix-blend-mode: color;           //颜色
mix-blend-mode: luminosity;      //亮度
mix-blend-mode: initial;         //初始
mix-blend-mode: inherit;         //继承
mix-blend-mode: unset;           //复原</span>