.carousel {
    position: relative;
    overflow: hidden;
    max-width: 100%;
}

.carousel-item {
    display: none;
    width: 100%;
}

.carousel-item.active {
    display: block;
}

.carousel button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    font-size: 18px;
    padding: 5px 10px;
    cursor: pointer;
}

.carousel .prev { left: 5px; }
.carousel .next { right: 5px; }