scrolly.css

body {
    transition: background-color 0.5s ease !important;
}

.scrolly-showing {
    background-color: #000 !important
}

.scrolly * {
    all: unset;
    box-sizing: border-box;
    display: block;
}

.scrolly {
    all: initial; 
    box-sizing: border-box;
    font-family: Arial, sans-serif;
    line-height: 1;
    color: #333;
    overflow-x: hidden;
}

.scrolly {
    width: 100%;
    position: relative;
}

/*** SCROLLY BACKGROUND ***/

.scrolly .scrolly-background {
    position: sticky;
    left: 0;
    width: 100%;
    z-index: -1;
    overflow: hidden;
}

.scrolly .scrolly-bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.scrolly .scrolly-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform-origin: center center;
}


/*** SCROLLY SECTIONS ***/

.scrolly .scrolly-sections-container {
    position: relative;
    z-index: 4;
}

.scrolly .scrolly-section {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.scrolly .scrolly-slide-inner {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    padding: 0;
}

/*** SCROLLY ANNOTATIONS ***/

.scrolly .scrolly-annotations {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
}

.scrolly-annotation {
    position: absolute;
}

/*** SCROLLY DEBUG ***/

.scrolly .scrolly-section.debug {
    outline: 1px solid red;
}

.scrolly .scrolly-section-label {
    position: absolute;
    top: 0;
    left: 0;
    padding: 0.5em;
    background-color: #000;
    color: #fff;
    font-size: 0.5em;
    font-weight: bold;
}