1.背景线性渐变
语法1:
background: linear-gradient(起始方向,颜色1,颜色2,...);
background: -webkit-linear-gradient(left,red,blue);
background: -webkit-linear-gradient(left top,red,blue);
background: linear-gradient(起始方向,颜色1,颜色2,...);
background: -webkit-linear-gradient(left,red,blue);
background: -webkit-linear-gradient(left top,red,blue);