.c-banner{
    width: 1200px;
    position: relative;
    margin: 0 auto;}
.c-banner img{
    width: auto;}
.c-banner .banner ul{
    list-style: none;
    padding-left: 0px;
    margin-bottom: 0px;}
.c-banner .banner ul li{
    position: absolute
    display: none;
    opacity: 0;}
.c-banner .banner ul li:nth-child(1){
    opacity: 1;
    display: block;}
.c-banner .banner ul li img{
    width: 100%;
    position: absolute;
    top: 0px;}
.c-banner .banner ul li:first-child img{
    position: relative;}
.c-banner .nexImg,.c-banner .preImg{
    padding: 10px;
    position: absolute;
    top: 50%;
    margin-top: -53px;
    background: #959595;
    opacity: 0.5;
    border-radius: 5px;
    z-index: 10;}
.c-banner .nexImg:hover,.c-banner .preImg:hover{
    opacity: 0.8;}
.c-banner .nexImg{
    right: 0px;}
.c-banner .nexImg img,.c-banner .preImg img{}
.c-banner .jumpBtn{
    width: 100%;
    position: absolute;
    bottom: 20px;
    text-align: center;}
.c-banner .jumpBtn ul{
    margin-bottom: 0px;
    padding: 0px;}

.c-banner .jumpBtn ul li{
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    background-color: none
    opacity: 0.9;
    border:1px solid #fff;
    margin-left: 10px;}
.c-banner .jumpBtn ul li:first-child{
    margin-left: 0px;}
@media screen and (max-width:768px) {
    .c-banner{
        width: 100%;
        height: 345px;
        overflow: hidden;}
    .c-banner .banner ul li img{
        width: 768px;
        height: 345px;
        position: absolute;
        left: 50%;
        margin-left: -384px;}
}