* {
    margin: 0;
    padding: 0;
}
/* .lbt{
    
} */
.wrap {
    float: left;
    width: 500px;
    height: 280px;
    margin: auto;
    /* perspective: 500px; */
    position: relative;
}

#wrap-ul {
    width: 500px;
    height: 280px;
    list-style: none;
    position: relative;
}

.wrap img {
    /* border-radius: 15%; 
        这里可以修改图片的大小，最好改的时候把ul和li的一并改为相同的*/
        transition: all 1s ease 0s;
        width: 750px;
        height: 280px;
        display: inline-block;
        opacity: 0;
        margin-left: 250px;
}
.cc img {
    opacity: 1;
}

#wrap-ul li {
    width: 500px;
    height: 280px;
    position: absolute;
    left: 0;
    top: 0;
}

.wrap span {
    width: 40px;
    height: 70px;
    background-color:black;
    color: white;
    text-align: center;
    font-size: 50px;
    position: absolute;
    margin-left: 145px;
    margin-top: -170px;
    z-index: 11;
    cursor: pointer;
    opacity: 0.4;
    transition: all 0.5s ease 0s;
}

.wrap span:hover {
    opacity: 1;
}

.wrap #toright1 {
    margin-top: -170px;
    margin-left: 1300px;
}

.page-container {
    position: absolute;
    margin-top: 340px;
    margin-left: 580px;
    width: 150px;
    height: 30px;
    line-height: 30px;
    text-align: center;
}
.page {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 100%;
    background: white;
    cursor: pointer;
}
.page.active {
    background: red;
}