/* reset to remove margins/padding and make each slide full viewport */
html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    background: #fff;
}

.slide {
    height: 100vh;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.slide img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    user-select: none;
    pointer-events: auto;
}

/* "no images" / "no JavaScript" message */
.slide.message {
    color: #000;
    font-family: system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

/* remove gaps between slides on some browsers */
body>* {
    margin: 0;
    padding: 0;
}