flex布局实现无缝滚动的示例代码

* {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
}

.box-big {
    position: absolute;
    display: flex;
    left: 50%;
    top: 50%;
    border: 1px solid #9FD6FF;
    transform: translate(-50%, -50%);
    width: 707px;
    height: 170px;
    /* background-color: pink; */
    flex-wrap: wrap;
    overflow: hidden;
}

.box-top {
    width: 707px;
    height: 30px;
    border-bottom: 1px solid #9FD6FF;
    background-color: #FEFEFE;
}

.div-bottom {
    width: 707px;
    height: 136px;
    /* background-color: darkgoldenrod; */
    overflow: hidden;
}

.st-icon-android {
    display: inline-block;
    width: 15px;
    height: 15px;
    background-image: url(../img/hd.gif);
    margin: 8px;
}

h5 {
    position: absolute;
    top: 6PX;
    left: 30px;
    color: #307DD1;
}

ul {
    position: absolute;
    left: 90px;
    width: 3000px;
    height: 100%;
    animation: run 20s linear infinite;
}

li {
    list-style: none;
    float: left;
    width: 140px;
    height: 100%;
    margin: 0 5px 0 5px;
    /* background-color: gold; */
    flex-wrap: wrap;
}

.photo {
    margin-top: 5px;
    width: 140px;
    height: 105px;
    text-align: center;
    /* background-color: springgreen; */
}

p {
    text-align: center;
}

img {
    cursor: pointer;
}

@keyframes run {
    0% {
        left: 0;
    }
    100% {
        left: -745px;
    }
}