.banner_container {
    overflow: hidden;
    position: relative;
}
.banner_btn {
    display: none;
    position: absolute;
    top: 0;
    bottom: 0;
    margin: auto;
    width: 100%;
    height: 70px;
}
.banner_container:hover .banner_btn {
    display: block;
}
.index-pre {
    float: left;
}
.index-next {
    float: right;
}
#point {
    position: absolute;
    right: 5px;
    bottom: 5px;
    padding: 0 15px;
}

.point {
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-left: 4px;
    border: 1px solid #fff;
    border-radius: 50%;
    -webkit-transition: .4s background;
    transition: .4s background;
    overflow: hidden;
}

.point-current {
    background-color: #fff;
//#E60021}