轮播.css

*{
    margin: 0;
    padding: 0;
    text-decoration: none;
}
.container{
    width: 600px;
    height: 400px;
    border: 3px solid #333;
    margin:100px auto 0;
    overflow: hidden;
    position: relative;
    box-shadow:10px 10px 100px rgb(24, 224, 6);
}
#list{
    width: 4200px;
    height: 400px;
    position: absolute;
    z-index:1;
}
#list  img{
    float: left;
}
#buttons{
    position: absolute;
    bottom: 10px;
    left:250px;
    z-index:2;    
}
#buttons span{
    width: 10px;
    height: 10px;
    border: 1px solid #eee;
    cursor: pointer;/*鼠标移入变小手形状*/
    float: left;
    margin: 5px;
    border-radius:50%;
}
.container #buttons .on{
    background-color:orange;
}
.container .arrow{
    cursor: pointer;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    font-size:36px;
    font-weight:bold;
    background-color:rgba(0, 0, 0,0.3);
    color: #fff;   
    z-index: 2;
    position: absolute;
    top:180px;  
    display: none; 
}
#prev{
    left: 10px;
}
#next{
    right: 10px;
}

.arrow:hover{
    background-color: rgba(0, 0, 0, .7);
}
.container:hover .arrow{
    display: block;
}