我正在尝试创建一个非常简单的幻灯片显示,该幻灯片显示每个图像之间都可以渐变。问题在于图像在之前逐渐淡出。
我希望每张图像淡入淡出1秒钟,再保持10秒钟,然后淡出淡出1秒钟-总计12秒钟。
@关键帧是通过将动画持续时间除以100得出的,每秒得出1.81%。
动画延迟为11秒,这使我感到困惑,因为随着最后一张图像的淡出,下一张图像应该逐渐淡入。
如果有人可以阐明我做错了什么,那我将非常感激。
HTML:
<!doctype html>
<html>
<body>
<main>
<div id="cf">
<img src="https://placeimg.com/640/480/animals">
<img src="https://placeimg.com/640/480/nature">
<img src="https://placeimg.com/640/480/tech">
<img src="https://placeimg.com/640/480/people">
<img src="https://placeimg.com/640/480/sepia">
</div>
</main>
</body>
</html>
CSS:
@keyframes crossFade{
0%{opacity: 0;}
1.81%{opacity: 1;}
18.18%{opacity: 1;}
19.98%{opacity: 0;}
100%{opacity: 0;}
}
#cf img{
position:absolute;
left:0;
opacity: 0;
animation-name: crossFade;
animation-duration: 55s;
animation-iteration-count: infinite;
}
#cf img:nth-last-of-type(1){
animation-delay: 0s;
}
#cf img:nth-last-of-type(2){
animation-delay: 11s;
}
#cf img:nth-last-of-type(3){
animation-delay: 22s;
}
#cf img:nth-last-of-type(4){
animation-delay: 33s;
}
#cf img:nth-last-of-type(5){
animation-delay: 44s;
}
链接到Codepen: https://codepen.io/Musicky/pen/YgyOPm
答案 0 :(得分:0)
我更改了您的百分比和持续时间。这样会显示出您所期望的样子。
您可能要调整第一次过渡开始时的长度,但是原始原稿没有重叠。当事物是可分割的时,它更容易计时。不是说无法做到,而是难以实现
@keyframes crossFade{
0%{opacity: 0;}
10%{opacity: 1;}
20%{opacity: 1;}
30%{opacity: 0;}
100%{opacity: 0;}
}
#cf img{
position:absolute;
left:0;
opacity: 0;
animation-name: crossFade;
animation-duration: 60s;
animation-iteration-count: infinite;
}
#cf img:nth-last-of-type(1){
animation-delay: 0s;
}
#cf img:nth-last-of-type(2){
animation-delay: 10s;
}
#cf img:nth-last-of-type(3){
animation-delay: 20s;
}
#cf img:nth-last-of-type(4){
animation-delay: 30s;
}
#cf img:nth-last-of-type(5){
animation-delay: 40s;
}
<div id="cf">
<img src="https://placeimg.com/640/480/animals">
<img src="https://placeimg.com/640/480/nature">
<img src="https://placeimg.com/640/480/tech">
<img src="https://placeimg.com/640/480/people">
<img src="https://placeimg.com/640/480/sepia">
</div>