轮播图CSS

css3中的animation:动画名 持续时间 动画的速度曲线 动画开始之前的延迟 动画播放的次数 是否应该轮流反向播放动画

动画播放次数：n（定义应该播放多少次动画） ； infinite（无限循环）
动画延迟：ns （默认为零）
是否反向播放： normal alterna
动画的速度曲线; linear (匀速)；ease（默认 先快然后加速，最后变慢）；ease-in（以低速开始）；ease-out（以低速结束）；ease-in-out（动画一低速开始和结束）
cubic-bezier（n，n，n，n）

@keyframes（用来改变动画轨迹或者效果）和animate
1需要创建一个名字，后面绑定动画时需要
2.from 起始时0%
3 to到达终点时等同于100%

box-sizing属性：content-box（border和padding值不计算在width之内）；padding-box（padding计算在width之内）；border-box（border和padding计算在width之内）
content属性：
a:after
{
content: " (" attr(href) ")";
}

HTML：

<!DOCTYPE html>
<html >
<head>
    <meta charset="UTF-8">
    <title>轮播图</title>
    <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
    <div class="main">
        <div class="imgs">
            <a href="javascript:void(0);" class="first-img"><img src="img/img1.jpg"></a>
            <a href="javascript:void(0);"><img src="img/img2.jpg"></a>
            <a href="javascript:void(0);"><img src="img/img3.jpg"></a>
            <a href="javascript:void(0);"><img src="img/img4.jpg"></a>
            <a href="javascript:void(0);"><img src="img/img5.jpg"></a>
        </div>

        <div class="controller">
            <div class="show-static"></div>
            <div class="show-run"></div>
            <a class="controller-tag1" href="javascript:void(0);"><img src="img/img1.jpg"></a>
            <a class="controller-tag2" href="javascript:void(0);"><img src="img/img2.jpg"></a>
            <a class="controller-tag3" href="javascript:void(0);"><img src="img/img3.jpg"></a>
            <a class="controller-tag4" href="javascript:void(0);"><img src="img/img4.jpg"></a>
            <a class="controller-tag5" href="javascript:void(0);"><img src="img/img5.jpg"></a>

    </div>

</body>
</html>

CSS：

* {
    margin: 0;
    padding: 0;
}
.main {
    position: relative;
    width: 1200px;
    margin: 50px auto;
    border: solid 1px #ccc;
}
.imgs {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
}
.main a {
    display: block;
    width: 100%;
    height: 100%;
}
.imgs a:first-child{
    animation: imgAnimate 18s linear infinite alternate;
}
.imgs:hover > .first-img,
.imgs:hover + .controller .show-run {
    animation-play-state: paused;
}
.imgs a img {
    width: 100%;
    height: 100%;
}
.controller {
    position: absolute;
    top: 0px;
    right: 0px;
    left: 0px;
    bottom: 0px;
    width: 80%;
    height: 40px;
    margin: 0 auto;
    margin-top: 560px;
}
.controller .show-run {
    margin-bottom: -17px;
    height: 16px;
    width: 20%;
    background: #FDB024;
    animation: showAnimate 18s linear infinite alternate;
}
.controller .show-static {
    margin-bottom: -17px;
    height: 17px;
    width: 100%;
    background: #575757;
}
.controller a {
    display: block;
    box-sizing: border-box;
    float: left;
    width: 20%;
    height: 17px;
    margin: 0px;
    border: solid 1px #CCC;
}
.controller a img {
    display: none;
    box-sizing: border-box;
    width: 100%;
    height: 150px;
    margin-top: -160px;
    border: solid 1px #FDB024;
}

.controller a::after {
    position: relative;
    content: "";
    display: none;
    margin-left: -20px;
    left: 50%;
    width: 10px;
    height: 0px;
    border-left:20px solid transparent;
    border-right:20px solid transparent;
    border-top: solid 10px #FDB024;
}
.controller-tag1:hover > img,
.controller-tag1:hover::after{
    display: block;
}
.controller-tag2:hover > img,
.controller-tag2:hover::after{
    display: block;
}
.controller-tag3:hover > img,
.controller-tag3:hover::after{
    display: block;
}
.controller-tag4:hover > img,
.controller-tag4:hover::after{
    display: block;
}
.controller-tag5:hover > img,
.controller-tag5:hover::after{
    display: block;
}

@keyframes imgAnimate
{
    0% {
        margin-top: 0px;
    }
    11.11% {
        margin-top: 0px;
    }
    22.22% {
        margin-top: -600px;
    }
    33.33% {
        margin-top: -600px;
    }
    44.44% {
        margin-top: -1200px;
    }
    55.55% {
        margin-top: -1200px;
    }
    66.66% {
        margin-top: -1800px;
    }
    77.77% {
        margin-top: -1800px;
    }
    88.88% {
        margin-top: -2400px;
    }
    100% {
        margin-top: -2400px;
    }
}

@keyframes showAnimate
{
    0% {
        margin-left: 0px;
    }
    11.11% {
        margin-left: 0px;
    }
    22.22% {
        margin-left: 20%;
    }
    33.33% {
        margin-left: 20%;
    }
    44.44% {
        margin-left: 40%;
    }
    55.55% {
        margin-left: 40%;
    }
    66.66% {
        margin-left: 60%;
    }
    77.77% {
        margin-left: 60%;
    }
    88.88% {
        margin-left: 80%;
    }
    100% {
        margin-left: 80%;
    }
}