.slick-dots {
    bottom: 50px;
    z-index: 1;
}

.slick-dots li button:before,
.slick-dots li.slick-active button:before {
    color: transparent;
    opacity: 1;
}

.slick-dots li button:before {
    background-color: transparent;
    border: 2px solid #fff;
    border-radius: 50%;
    display: inline-block;
    height: 10px;
    width: 10px;

}

.slick-dots li.slick-active button:before {
    background-color: #fff;
}