SOURCE

<div class="slide-wrap">
    <ul>
        <li>
            <a href="#"><img src="http://t.cn/RGie9G0" alt=""></a>
        </li>
        <li>
            <a href="#"><img src="http://t.cn/RGie6TC" alt=""></a>
        </li>
        <li>
            <a href="#"><img src="http://t.cn/RGieayM" alt=""></a>
        </li>
        <li>
            <a href="#"><img src="http://t.cn/RGieSmx" alt=""></a>
        </li>
        <li>
            <a href="#"><img src="http://t.cn/RGieNVa" alt=""></a>
        </li>
    </ul>
</div>

/*css reset */
body,p,div,ol,ul,li,dl,dt,dd,h1,h2,h3,h4,h5,h6,form,input,iframe,nav {
    margin: 0;
    padding: 0;
}
body {
    font: 14px Microsoft YaHei;
} 
a {
    text-decoration: none; 
} 
ol,ul {
    list-style: none;
} 
.slide-wrap {
    width: 690px;
    margin: 100px auto;
    overflow: hidden;
}
.slide-wrap ul {
    width: 500%;
    position: relative;
    left: 0;
    -webkit-animation: we 20s linear infinite;
    animation: we 20s linear infinite;
}
.slide-wrap ul li {
    width: 690px;
    float: left;
}

/*兼容移动端*/
@-webkit-keyframes we {     
    
    19% {
        left: 0;
    }
    20% {
        left: -100%;
    }
    39% {
        left: -100%;
    }
    40% {
        left: -200%;
    }
    59% {
        left: -200%;
    }
    60% {
        left: -300%;
    }
    79% {
        left: -300%;
    }
    80% {
        left: -400%;
    }
    99% {
        left: -400%;
    }
}

@keyframes we {
    
    19% {
        left: 0;
    }
    20% {
        left: -100%;
    }
    39% {
        left: -100%;
    }
    40% {
        left: -200%;
    }
    59% {
        left: -200%;
    }
    60% {
        left: -300%;
    }
    79% {
        left: -300%;
    }
    80% {
        left: -400%;
    }
    99% {
        left: -400%;
    }
}