body {
    background-color: #000;
    margin: 0;
    padding: 0;
}

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

.slider-item {
    /* display: none; */
    /* opacity: 1; */
    
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    /* visibility: hidden; */
    display: none;
    /* opacity: 1; */
    /* transition: opacity 250ms ease-in, visibility 0ms ease-in 0ms; */
    /* transition: opacity 250ms ease-in, display 0ms ease-in 0ms; */
}
.slider-item.show {
    /* opacity: 0;
    transition: all 1s; */
    
    /* visibility: visible; */
    display: block;
    /* opacity: 0; */
    /* transition: opacity 250ms ease-in, visibility 0ms ease-in 250ms; */
    /* transition: opacity 250ms ease-in, display 0ms ease-in 250ms; */
}

iframe {
    width: 100%;
    height: 99vh;
    overflow: hidden;
}