java

How about crossfade? Is it possible?

@-webkit-keyframes fade { from {opacity: .4} to {opacity: 1} } @keyframes fade { from {opacity: .4} to {opacity: 1} } What should I do to make it into fade in and fade out effect, I've tried to change the opacity but failed to work? https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_slideshow_auto