CSS里的颜色渐变分为线性渐变和径向渐变。 ▶ 线性渐变是通过 background: linear-gradient 来实现的 语法: background-image: linear-gradient(direction, color-stop1, color-stop2, ...); 例(从左至右渐变,颜色由 #000000 渐变至 #ffffff) background: linear-gradient(to right, #000000, #ffffff); 通过 to right 来实现方向