.slider {
    position: relative;
    width: 100%;
    height: 100vh; 
    overflow: hidden; 
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover; 
    background-position: center; 
    opacity: 0; 
    transition: opacity 1s ease-in-out; 
}

.slide.active {
    opacity: 1; /
}