lunbo.css

#container{
    box-sizing: border-box;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    max-width: 1040px;
    min-width: 763px;
    padding: 20px 30px 0px 30px;
    border: 1px solid blue;
}
#lunbo{
    width: 100%;
    height: 227px;
}
#imgsbox{
    display: inline-block;
    position: relative;
    width: 100%;
    height: 200px;
}
.abox{
    display: block;
    position: absolute;
    top:0;
    left:0;
    bottom:0;
    right:0;
    margin: auto;
    width: 450px;
    height: 167px;
    background-color: black;
    animation-fill-mode:forwards;
    z-index: -1;
}
.abox.l{
    position: absolute;
    width: 513px;
    height: 190px;
    left:0;
    top:10px;
    right:unset;
    z-index: 0;
}
.abox.r{
    position: absolute;
    width: 513px;
    height: 190px;
    right:0;
    top:10px;
    left:unset;
    z-index: 0;
}
.abox img{
    opacity: 0.5;
}
a{  
    display: inline-block;
    margin-left: auto;
    margin-right: auto;
}
#imgsbox img{
    /*width: 450px;*/
    /*height: 167px;*/
}
#lunbo ul{
    list-style-type: none;
}
#btnsbox{
    display: inline-block;
    height: 27px;
    text-align: center;
    width: 100%;
    padding: 0px;
    margin: 0px;
}
.lbbtn{
    display: inline-block;
    margin-left: 5px;
    margin-right: 0px;
    width: 20px;
    height: 10px;
    border-top: 2px solid darkgray;
}
.lbbtn:hover{
    border-top: 2px solid red;
}