背景渐变
线性渐变
background:line-grsdient()
background: linear-gradient(white,red,white);
(颜色,颜色,颜色)
background: linear-gradient(to right top,blue,red);
(渐变方向,颜色,颜色)
background: linear-gradient(90deg,blue,red);
(角度,颜色)
background: linear-gradient(90deg,blue 20%,white 0, white 30%,yellow 0,yellow 10%);
径向渐变
background:radial-gradient(circle,red,blue);