.sis-slider-wrapper {
    position: relative;
    max-width: 100%;
    margin: 20px auto;
}

.sis-slider {
    position: relative;
    overflow: hidden;
    width: 100%;
}

.sis-slide {
    display: none;
    width: 100%;
}

.sis-slide.active {
    display: block;
}

.sis-slide img {
    width: 100%;
    height: auto;
    display: block;
}

.sis-prev,
.sis-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    padding: 10px 15px;
    font-size: 24px;
    cursor: pointer;
    z-index: 10;
}

.sis-prev {
    left: 10px;
}

.sis-next {
    right: 10px;
}

.sis-dots {
    text-align: center;
    padding: 10px 0;
}

.sis-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ccc;
    margin: 0 5px;
    cursor: pointer;
}

.sis-dot.active {
    background: #333;
}