mix-blend-mode

mix-blend-mode是一個css3新增的混合color與背景元素顏色的樣式，同一個元素的兩個顏色不影響。

mix-blend-mode: normal;          //正常
mix-blend-mode: multiply;        //正片疊底
mix-blend-mode: screen;          //濾色
mix-blend-mode: overlay;         //疊加
mix-blend-mode: darken;          //變暗
mix-blend-mode: lighten;         //變亮
mix-blend-mode: color-dodge;     //顏色減淡
mix-blend-mode: color-burn;      //顏色加深
mix-blend-mode: hard-light;      //強光
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;      //飽和度
mix-blend-mode: color;           //顏色
mix-blend-mode: luminosity;      //亮度

mix-blend-mode: initial;         //初始
mix-blend-mode: inherit;         //繼承
mix-blend-mode: unset;           //復原