linear-gradient 是CSS3中一个重要的属性，初看觉得很简单，但是别看它简单，它能实现很多复杂的图形。

代码还是比较简单的: linear-gradient(65deg,#2b7ce7,#2b7ce7 50%,transparent 0,transparent),linear-gradient(115deg,#2b7ce7,#2b7ce7 50%,transparent 0,transparent)

但是理解起来还是需要一定基础的。

线性渐变 linear-gradient

基本用法

background-image: linear-gradient(red, yellow, blue, green); background-image: linear-gradient(rgba(255, 0, 0, .2), yellow, blue, green);

控制颜色渐变的方向(right, left, top, bottom)

/*    控制颜色渐变的方向    to right -- 从左向右    to top -- 从下到上    to left -- 从右到左    to bottom --- 从上到下（默认值）*/background-image: linear-gradient(to right, red, yellow, blue, green);background-image: linear-gradient(to top, red, yellow, blue, green);background-image: linear-gradient(to left, red, yellow, blue, green);background-image: linear-gradient(to bottom, red, yellow, blue, green);

控制颜色渐变的方向(deg)

/*0deg = to top -- 从下到上*/background-image: linear-gradient(0deg, red, yellow, blue, green);/*基于0度顺时针旋转45deg*/background-image: linear-gradient(45deg, red, yellow, blue, green);/*基于0度逆时针旋转45deg*/background-image: linear-gradient(-45deg, red, yellow, blue, green);

控制颜色渐变的方向(to)

/*设置过渡颜色的起始位置*//*从过渡起始位置50px开始让红色和黄色之间产生颜色渐变效果*/background-image: linear-gradient(to right, red 50px, yellow, blue, green);background-image: linear-gradient(to right, red 50px, yellow 50px, blue, green);background-image: linear-gradient(to right, red 50px, yellow 50px, yellow 100px, blue, green);

重复线性渐变：repeating-linear-gradient

background-image: linear-gradient(to right, red 0, red 50px, yellow 50px, yellow 100px, red 100px, red 150px, yellow 150px, yellow 200px);/**与上面重复写渐变有相同的效果*/background-image: repeating-linear-gradient(        to right        , red 0        , red 50px        , yellow 50px        , yellow 100px);