<div id="help" class="center-side" style="visibility: hidden;">
<img src="css/img/main-bg-1-full-hd.jpg" onload="loadImage()" class="center-side__lg" alt="">
<img src="css/img/main-bg-md.jpg" class="center-side__md" alt="">
<img src="css/img/main-bg-sm.jpg" class="center-side__sm" alt="">
<img src="css/img/main-bg-xs.jpg" class="center-side__xs" alt="">
</div>
<script>
function loadImage() {
document.getElementById("help").style.visibility = "visible";
}
</script>