.slideshow {
    position: relative;
    height: 300px;
    overflow: hidden;
    border-radius: 10px;
}

.slideshow .slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.slideshow .slide.active {
    opacity: 1;
    z-index: 2;
}

.slide-bg {
    position: absolute;
    width: 120%;
    height: 120%;
    background-size: cover;
    background-position: center;
    will-change: transform;
}

.overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
}

/* Controls */
.controls span {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 25px;
    color: #fff;
    cursor: pointer;
    padding: 10px;
    z-index: 10;
}

.prev { left: 10px; }
.next { right: 10px; }