optimizing page speed

layouts/partials/banner.html

@@ -5,7 +5,7 @@
 {{"<!-- Welcome Slider-->" | safeHTML}}
 <section class="hero-area" style='background-image: url("{{ .bg_image_webp | absURL }}")'>
 	<!-- this image is for trigger this section fallback background image -->
-	<img class="lozad" style="display: none;" onerror="this.onerror=null;this.parentElement.style.backgroundImage= 'url({{ .bg_image | absURL }})'" data-src="{{ .bg_image_webp | absURL }}" />
+	<img class="lozad d-none" data-src="{{ .bg_image_webp | absURL }}" onerror="this.onerror=null;this.parentElement.style.backgroundImage= 'url({{ .bg_image | absURL }})'"/>
 
 	<div class="block">
 		{{ if .icon }}