ELPage

Hi All, 

I'm using this CSS code injection to header but I can't adjust font or positioning of the caption. It crosses over the image at the bottom on desktop and through the bottom 2/3rds on mobile. Any idea how to fix?

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>
<script>
function createNodeCaption(textContent){
    var divElement = document.createElement("div");
    var pElement = document.createElement("p");
    pElement.innerHTML = textContent;
    divElement.classList.add("style-gallery-lightbox-text");
    divElement.appendChild(pElement);
    return divElement;
}
$( document ).ready(function() {
    var itemGallery = document.getElementsByClassName('gallery-grid-item');
    var itemGalleryLightBox = document.getElementsByClassName('gallery-lightbox-item');
    var countGalleryItem = itemGallery.length;

    for(var i = 0; i < countGalleryItem; i++){
        if(itemGallery[i].getElementsByTagName('p').length != 0){
            var text = itemGallery[i].getElementsByTagName('p')[0].textContent;
            var itemNeedCaption = itemGalleryLightBox[i].getElementsByClassName('gallery-lightbox-item-src')[0];
            itemNeedCaption.appendChild(createNodeCaption(text));
        }
    }
});

</script>
<style>
  figcaption.gallery-caption.gallery-caption-grid-simple {
    display: none;
}
.style-gallery-lightbox-text {
    padding: 10px 0px 25px 0px;
    display: block;
    position: absolute;
    left: 50%;
    top: 90%;
    width: 100%;
    transform: translate(-50%, -50%);
    font-size: .3em
    text-align: center;
}

.style-gallery-lightbox-text p {
    width: 90%;
    padding: 10px 15px;
    margin: auto;
    color: gray;
    background-color: rgba(0,0,0,0);
}
  @media screen and (max-width:767px) {
.style-gallery-lightbox-text {
    top: 70%;
}
}
</style>
}