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我試圖創建一個全屏幻燈片： http://codepen.io/jdvs1/pen/ZbpJvJ 有第一滑片及第二滑片之間的很長的延遲，大約一個空白的第二，黑色屏幕製作易於進出更快全屏背景圖像幻燈片
我希望圖像之間的轉換相對較快，並且不包括空白黑屏的延遲視圖。我怎樣才能做到這一點？我一直在玩關鍵幀幾個小時。
這裏的HTML：
<html>
<body>
<ul class="slideshow">
<li>
<h3>The Seasons</h3>
<!-- By Keven Law from Los Angeles, USA (Long Hot Summer......) [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3AFlickr_-_law_keven_-_Long_Hot_Summer.......jpg -->
<span>Summer</span>
</li>
<li>
<!-- By http://www.ForestWander.com [CC-BY-SA-3.0-us (http://creativecommons.org/licenses/by-sa/3.0/us/deed.en)], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3ARed-fall-tree-lake_-_West_Virginia_-_ForestWander.png -->
<span>Fall</span>
</li>
<li>
<!-- By Valerii Tkachenko [CC-BY-2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3AWinter_wonderland_Austria_mountain_landscape_(8290712092).jpg -->
<span>Winter</span>
</li>
<li>
<!-- By Arman7 (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons, http://commons.wikimedia.org/wiki/File%3ABoroujerd_spring.jpg -->
<span>Spring</span>
</li>
</ul>
</body>
</html>
這裏的CSS：
html {
min-height: 100%;
}
body {
height: 100%;
background: black;
}
.slideshow {
list-style: none;
z-index: 1;
}
.slideshow li span {
width: 100%;
height: 100%;
position: absolute;
top: 0px;
left: 0px;
color: transparent;
background-size: cover;
background-position: 50% 50%;
background-repeat: none;
opacity: 0;
z-index: 0;
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-webkit-animation: imageAnimation 12s linear 0s infinite;
-moz-animation: imageAnimation 12s linear 0s infinite;
animation: imageAnimation 12s linear 0s infinite;
}
.slideshow li:nth-child(1) span {
background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/203277/summer-slide.jpg);
}
.slideshow li:nth-child(2) span {
background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/203277/fall-slide.jpg);
-webkit-animation-delay: 6s;
-moz-animation-delay: 6s;
animation-delay: 6s;
}
.slideshow li:nth-child(3) span {
background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/203277/winter-slide.jpg);
-webkit-animation-delay: 9s;
-moz-animation-delay: 9s;
animation-delay: 9s;
}
@-webkit-keyframes imageAnimation {
0% {
opacity: 0;
-moz-animation-timing-function: ease-in;
}
12.5% {
opacity: 1;
-moz-animation-timing-function: ease-out;
}
25% {
opacity: 1;
}
37.5% {
opacity: 0;
}
100% {
opacity: 0;
}
}
@-moz-keyframes imageAnimation {
0% {
opacity: 0;
-moz-animation-timing-function: ease-in;
}
12.5% {
opacity: 1;
-moz-animation-timing-function: ease-out;
}
25% {
opacity: 1;
}
37.5% {
opacity: 0;
}
100% {
opacity: 0;
}
}
@keyframes imageAnimation {
0% {
opacity: 0;
-webkit-animation-timing-function: ease-in;
-moz-animation-timing-function: ease-in;
animation-timing-function: ease-in;
}
12.5% {
opacity: 1;
-webkit-animation-timing-function: ease-out;
-moz-animation-timing-function: ease-out;
animation-timing-function: ease-out;
}
25% {
opacity: 1;
}
37.5% {
opacity: 0;
}
100% {
opacity: 0;
}
}
@-webkit-keyframes titleAnimation {
0% {
opacity: 0;
}
12.5% {
opacity: 1;
}
25% {
opacity: 1;
}
37.5% {
opacity: 0;
}
100% {
opacity: 0;
}
}
@-moz-keyframes titleAnimation {
0% {
opacity: 0;
}
12.5% {
opacity: 1;
}
25% {
opacity: 1;
}
37.5% {
opacity: 0;
}
100% {
opacity: 0;
}
}
@keyframes titleAnimation {
0% {
opacity: 0;
}
12.5% {
opacity: 1;
}
25% {
opacity: 1;
}
37.5% {
opacity: 0;
}
100% {
opacity: 0;
}
}
.no-cssanimations .slideshow li span {
opacity: 1;
}