.slide img{
    max-width: 100%;
}

.banner_slider .slick-next{
    background: url('../pics/next.png') center center no-repeat;
    font-size: 0px;
    border: 0px;
    width: 45px;
    height: 73px;
    background-size: 80%;
    position: absolute;
    right: 10px;
    top: 50%;
    margin-top:  -36px;
    z-index: 1;
    outline: none;
}

.banner_slider .slick-prev{
    background: url('../pics/prev.png') center center no-repeat;
    font-size: 0px;
    background-size: 80%;
    border: 0px;
    width: 45px;
    height: 73px;
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -36px;
    z-index: 1;
    outline: none;
}

.banner_slider .slick-dots{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    text-align: center;
}
.banner_slider .slick-dots li{
    list-style: none;
    width: 10px;
    height: 10px;
    background: gray;
    border-radius: 50%;
    display: inline-block;
    margin: 5px;
    opacity: 0.2;
}
.banner_slider .slick-dots li.slick-active{
    background-color: #000;
    opacity: 0.2;
}
.banner_slider .slick-dots li button{
    display: none;
}