div, ul, li, a, img {
    margin: 0;
    padding: 0;
}

ul, li {
    list-style: none;
}

a {
    text-decoration: none;
}

#wrapper {
    position: relative;
    margin: 30px auto;
    width: 650px;
    height: 381px;
}

#banner2 {
    position: relative;
    width: 650px;
    height: 381px;
    overflow: hidden;
}

.imgList {
    position: relative;
    width: 650px;
    height: 381px;
    z-index: 10;
    overflow: hidden;
}

.imgList li {
    float: left;
    display: inline;
}

#prev,
#next {
    position: absolute;
    top: 80px;
    z-index: 20;
    cursor: pointer;
    opacity: 0.2;
    filter: alpha(opacity=20);
}

#prev {
    left: 10px;
}

#next {
    right: 10px;
}

#prev:hover,
#next:hover {
    opacity: 0.5;
    filter: alpha(opacity=50);
}

.bg {
    position: absolute;
    bottom: 0;
    width: 650px;
    height: 20px;
    z-index: 20;
    opacity: 0.5;
    filter: alpha(opacity=40);
    background: black;
}

.infoList {
    position: relative;
    left: 10px;
    bottom: 0;
    z-index: 30;
}

.infoList li {
    display: none;
}

.infoList .infoOn {
    display: inline;
    color: white;
}

.indexList {
    position: relative;
    right: 10px;
    bottom: 0;
    z-index: 30;
    display: flex;
    gap: 8px;
}

.indexList li {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indexList .indexOn {
    background: blue;
    width: 20px;
    border-radius: 4px;
}