.nav-dots {
    text-align: center;
    position: absolute;
    bottom: 20px;
    height: 30px;
    width: 100%;
    left: 0;
    display: none;
}

.nav-dots span {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin: 3px;
    cursor: pointer;
    border: 2px solid #ffffff;
    background: transparent;
}

.nav-dots span.nav-dot-current {
    background-color: #ffffff;
}