css背景渐变（动画）

// css背景渐变（动画）.writeFarming{background: linear-gradient(-45deg, #2d8cf0, #19be6b, #ff9900, #ed3f14);animation: gradientBG 15s ease infinite;background-size: 400% 400%;}@keyframes gradientBG{0% {background-position: 0% 50%;}50% {background-position: 100% 50%;}100% {background-position: 0% 50%;}}