.banner-card {
    width: 100%;
    height: 500px;
    line-height: 500px;
    position: relative;
}
.banner-card ul {
    width: 1263px;
    height: 100%;
    margin: 0 auto;
    text-align: center;
    position: relative;
}
.banner-card li {
    width: 314px;
    height: 500px;
    position: absolute;
    top: 0;
    list-style-type: none;
    -webkit-transition: 0.3s;
    -moz-transition: 0.3s;
    -ms-transition: 0.3s;
    -o-transition: 0.3s;
    transition: 0.3s;
    cursor: pointer;
    display: none;
}
.banner-card li img {
    display: inline-block;
    width: 100%;
    height: 100%;
}
.banner-card li.one {
    z-index: 1;
    left: 75px;
    -webkit-transform: scale(0.6);
    -moz-transform: scale(0.6);
    -ms-transform: scale(0.6);
    -o-transform: scale(0.6);
    transform: scale(0.6);
    display: block;
}

.banner-card li.two {
    z-index: 2;
    left: 275px;
    -webkit-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -ms-transform: scale(0.8);
    -o-transform: scale(0.8);
    transform: scale(0.8);
    display: block;
}
.banner-card li.three {
    left: 475px;
    z-index: 3;
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    -o-transform: scale(1);
    transform: scale(1);
    display: block;
}
.banner-card li.four {
    z-index: 2;
    left: 675px;
    -webkit-transform: scale(0.8);
    -moz-transform: scale(0.8);
    -ms-transform: scale(0.8);
    -o-transform: scale(0.8);
    transform: scale(0.8);
    display: block;
}
.banner-card li.five {
    left: 875px;
    z-index: 1;
    -webkit-transform: scale(0.6);
    -moz-transform: scale(0.6);
    -ms-transform: scale(0.6);
    -o-transform: scale(0.6);
    transform: scale(0.6);
    display: block;
}

.banner-card div {
    transition: 0.3s;
    position: absolute;
    top: 0;
    cursor: pointer;
    opacity: 0;
}
.banner-card div span {
    display: inline-block;
    font-size: 25px;
}

.banner-card .left-btn {
    left: 20px;
    width: 40px;
    height: 80px;
    background-image: url("../images/left.png");
    background-repeat: no-repeat;
    background-size: 100%;
    top: 210px;
}
.banner-card .right-btn {
    right: 20px;
    width: 40px;
    height: 80px;
    background-image: url("../images/right.png");
    background-repeat: no-repeat;
    background-size: 100%;
    top: 210px;
}