html - 如何循环这个CSS slider 动画？

Question

我正在尝试创建一个 css slider ，到目前为止，我只成功地让它正确迭代了一次。有没有办法让它无限循环而不改变最终结果？

<div class="slider">
<div class="slides">
<div class="slider-1"></div>
<div class="slider-2"></div>
<div class="slider-3"></div>
<div class="slider-4"></div>
</div>
</div>

CSS

.slider{
  width:700px;
  height:300px;
  margin:50px auto;
  border:1px solid;
  overflow:hidden;
}
.slides{
  width:400%;
  height:100%;
  -webkit-animation:slide-1 2s linear 4s 1 forwards, slide-2 2s linear 8s 1 forwards, slide-3 2s linear 12s 1 forwards, slide-4 2s linear 16s 1 forwards;
  -moz-animation:slide-1 2s linear 4s 1 forwards, slide-2 2s linear 8s 1 forwards, slide-3 2s linear 12s 1 forwards, slide-4 2s linear 16s 1 forwards;
  animation:slide-1 2s linear 4s 1 forwards, slide-2 2s linear 8s 1 forwards, slide-3 2s linear 12s 1 forwards, slide-4 2s linear 16s 1 forwards;
}
.slider-1, .slider-2, .slider-3, .slider-4{
  width:25%;
  height:100%;
  float:left;
}
.slider-1{
  background:#222;
}
.slider-2{
  background:#444;
}
.slider-3{
  background:#666;
}
.slider-4{
  background:#888;
}

@-webkit-keyframes slide-1{
  from{margin-left:0px;}
  to{margin-left:-100%;}
}
@-webkit-keyframes slide-2{
  from{margin-left:-100%;}
  to{margin-left:-200%;}
}
@-webkit-keyframes slide-3{
  from{margin-left:-200%;}
  to{margin-left:-300%;}
}
@-webkit-keyframes slide-4{
  from{margin-left:-300%;}
  to{margin-left:0%;}
}
@-moz-keyframes slide-1{
  from{margin-left:0px;}
  to{margin-left:-100%;}
}
@-moz-keyframes slide-2{
  from{margin-left:-100%;}
  to{margin-left:-200%;}
}
@-moz-keyframes slide-3{
  from{margin-left:-200%;}
  to{margin-left:-300%;}
}
@-moz-keyframes slide-4{
  from{margin-left:-300%;}
  to{margin-left:0%;}
}
@keyframes slide-1{
  from{margin-left:0px;}
  to{margin-left:-100%;}
}
@keyframes slide-2{
  from{margin-left:-100%;}
  to{margin-left:-200%;}
}
@keyframes slide-3{
  from{margin-left:-200%;}
  to{margin-left:-300%;}
}
@keyframes slide-4{
  from{margin-left:-300%;}
  to{margin-left:0%;}
}

http://jsfiddle.net/1kcbpqfu/

Answer 1

在我看来，这是最好的解决方案之一。

/* ANIMATION */
@keyframes cycle {
	0%  { top:0px; }
	4%  { top:0px; } 
	16% { top:0px; opacity:1; z-index:0; } 
	20% { top:325px; opacity:0; z-index:0; } 
	21% { top:-325px; opacity:0; z-index:-1; }
	92% { top:-325px; opacity:0; z-index:0; }
	96% { top:-325px; opacity:0; }
	100%{ top:0px; opacity:1; }
	
}
@keyframes cycletwo {
	0%  { top:-325px; opacity:0; }
	16% { top:-325px; opacity:0; }
	20% { top:0px; opacity:1; }
	24% { top:0px; opacity:1; } 
	36% { top:0px; opacity:1; z-index:0; } 
	40% { top:325px; opacity:0; z-index:0; }
	41% { top:-325px; opacity:0; z-index:-1; } 
	100%{ top:-325px; opacity:0; z-index:-1; }
}
@keyframes cyclethree {
	0%  { top:-325px; opacity:0; }
	36% { top:-325px; opacity:0; }
	40% { top:0px; opacity:1; }
	44% { top:0px; opacity:1; } 
	56% { top:0px; opacity:1; } 
	60% { top:325px; opacity:0; z-index:0; }
	61% { top:-325px; opacity:0; z-index:-1; } 
	100%{ top:-325px; opacity:0; z-index:-1; }
}
@keyframes cyclefour {
	0%  { top:-325px; opacity:0; }
	56% { top:-325px; opacity:0; }
	60% { top:0px; opacity:1; }
	64% { top:0px; opacity:1; }
	76% { top:0px; opacity:1; z-index:0; }
	80% { top:325px; opacity:0; z-index:0; }
	81% { top:-325px; opacity:0; z-index:-1; }
	100%{ top:-325px; opacity:0; z-index:-1; }
}
@keyframes cyclefive {
	0%  { top:-325px; opacity:0; }
	76% { top:-325px; opacity:0; }
	80% { top:0px; opacity:1; }
	84% { top:0px; opacity:1; }
	96% { top:0px; opacity:1; z-index:0; }
	100%{ top:325px; opacity:0; z-index:0; }
}

/* ANIMATION BAR */
@keyframes fullexpand {
    0%, 20%, 40%, 60%, 80%, 100% { width:0%; opacity:0; }
    4%, 24%, 44%, 64%, 84% { width:0%; opacity:0.3; }
   16%, 36%, 56%, 76%, 96% { width:100%; opacity:0.7; }
   17%, 37%, 57%, 77%, 97% { width:100%; opacity:0.3; }
   18%, 38%, 58%, 78%, 98% { width:100%; opacity:0; }	
}

/* Common */
html, body {
	background:#eaeaea url(../img/bg.png) repeat;
	font-size:12px;
	font-family:"Open Sans", serif;
	min-width:960px;
	margin:0;
	padding:0;
	color:#aaa;
}

.content h1 {
	font-size:48px;
	color:#000;
	text-shadow:0px 1px 1px #f4f4f4;
	text-align:center;
	padding:60px 0 30px;	
}

/* LAYOUT */
.container {
	margin:0 auto;
	overflow:hidden;
	width:960px;
}

/* CONTENT SLIDER */
#content-slider {
	width:100%;
	height:360px;
	margin:10px auto 0;
}
/* SLIDER */
#slider {
	background:#000;
	border:5px solid #eaeaea;
	box-shadow:1px 1px 5px rgba(0,0,0,0.7);
	height:320px;
	width:680px;
	margin:40px auto 0;
	overflow:visible;
	position:relative;
}
#mask {
	overflow:hidden;
	height:320px;
}
#slider ul {
	margin:0;
	padding:0;
	position:relative;
}
#slider li {
	width:680px;
	height:320px;
	position:absolute;
	top:-325px;
	list-style:none;
}

#slider li.firstanimation {
	-moz-animation:cycle 25s linear infinite;	
	-webkit-animation:cycle 25s linear infinite;		
}
#slider li.secondanimation {
	-moz-animation:cycletwo 25s linear infinite;
	-webkit-animation:cycletwo 25s linear infinite;		
}
#slider li.thirdanimation {
	-moz-animation:cyclethree 25s linear infinite;
	-webkit-animation:cyclethree 25s linear infinite;		
}
#slider li.fourthanimation {
	-moz-animation:cyclefour 25s linear infinite;
	-webkit-animation:cyclefour 25s linear infinite;		
}
#slider li.fifthanimation {
	-moz-animation:cyclefive 25s linear infinite;
	-webkit-animation:cyclefive 25s linear infinite;		
}

#slider .tooltip {
	background:rgba(0,0,0,0.7);
	width:300px;
	height:60px;
	position:relative;
	bottom:75px;
	left:-320px;
	-moz-transition:all 0.3s ease-in-out;
	-webkit-transition:all 0.3s ease-in-out;  
}
#slider .tooltip h1 {
	color:#fff;
	font-size:24px;
	font-weight:300;
	line-height:60px;
	padding:0 0 0 20px;
}
#slider li#first:hover .tooltip, 
#slider li#second:hover .tooltip, 
#slider li#third:hover .tooltip, 
#slider li#fourth:hover .tooltip, 
#slider li#fifth:hover .tooltip {
	left:0px;
}
#slider:hover li, 
#slider:hover .progress-bar {
	-moz-animation-play-state:paused;
	-webkit-animation-play-state:paused;
}

/* PROGRESS BAR */
.progress-bar { 
	position:relative;
	top:-5px;
	width:680px; 
	height:5px;
	background:#000;
	-moz-animation:fullexpand 25s ease-out infinite;
	-webkit-animation:fullexpand 25s ease-out infinite;
}

<div class="content">
	<h1>Pure CSS3 Cycle Slider</h1>
</div>

<div class="container">
	<div id="content-slider">
    	<div id="slider">
        	<div id="mask">
            <ul>
           	<li id="first" class="firstanimation">
            <a href="#">
            <img src="http://www.alessioatzeni.com/CSS3-Cycle-Image-Slider/images/img_1.jpg" alt="Cougar"/>
            </a>
            <div class="tooltip">
            <h1>Cougar</h1>
            </div>
            </li>

            <li id="second" class="secondanimation">
            <a href="#">
            <img src="http://www.alessioatzeni.com/CSS3-Cycle-Image-Slider/images/img_2.jpg" alt="Lions"/>
            </a>
            <div class="tooltip">
            <h1>Lions</h1>
            </div>
            </li>
            
            <li id="third" class="thirdanimation">
            <a href="#">
            <img src="http://www.alessioatzeni.com/CSS3-Cycle-Image-Slider/images/img_3.jpg" alt="Snowalker"/>
            </a>
            <div class="tooltip">
            <h1>Snowalker</h1>
            </div>
            </li>
                        
            <li id="fourth" class="fourthanimation">
            <a href="#">
            <img src="http://www.alessioatzeni.com/CSS3-Cycle-Image-Slider/images/img_4.jpg" alt="Howling"/>
            </a>
            <div class="tooltip">
            <h1>Howling</h1>
            </div>
            </li>
                        
            <li id="fifth" class="fifthanimation">
            <a href="#">
            <img src="http://www.alessioatzeni.com/CSS3-Cycle-Image-Slider/images/img_5.jpg" alt="Sunbathing"/>
            </a>
            <div class="tooltip">
            <h1>Sunbathing</h1>
            </div>
            </li>
            </ul>
            </div>
            <div class="progress-bar"></div>
        </div>
    </div>
</div>