Excuse me, it's a question... and as for the code I'm just starting, and I'm uploading image galleries...
I am sharing with you the gallery code that is inside the Gutenberg block.
This I'm in test mode locally because I can't go to the live site to test.
<!-- wp:essential-blocks/image-gallery {"blockId":"eb-image-gallery-9vwl1bx","blockMeta":{"desktop":" .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx{ gap:10px; transition:background 0.5s, border 0.5s, border-radius 0.5s, box-shadow 0.5s ; } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.grid{ grid-template-columns: repeat(3, auto); } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.masonry{ columns: 3; } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.masonry .eb-gallery-img-content{ margin-bottom: 10px; } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx .eb-gallery-img-content .eb-gallery-link-wrapper { transition: border 0.5s, border-radius 0.5s, box-shadow 0.5s ; } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx .eb-gallery-img-content .eb-gallery-img-caption { color: #ffffff; background-color: rgba(195 195 195 / 0.7); text-align: center; margin-top: 0px; margin-right: 0px; margin-left: 0px; margin-bottom: 0px; padding-top: 5px; padding-right: 10px; padding-left: 10px; padding-bottom: 5px; font-size: 13px; } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.caption-style-2 .eb-gallery-link-wrapper:after { background-color: rgba(0 0 0 / 0.7); } ","tab":" .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.grid{ grid-template-columns: repeat(, auto); } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.masonry{ columns: ; } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.masonry .eb-gallery-img-content{ margin-bottom: calc(px - px); } ","mobile":" .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.grid{ grid-template-columns: repeat(, auto); } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.masonry{ columns: ; } .eb-gallery-img-wrapper.eb-image-gallery-9vwl1bx.masonry .eb-gallery-img-content{ margin-bottom: calc(px - px); } "},"images":[{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-11-La-pluma-el-tintero-y-el-secante-Historia-del-mundo-2.jpg","height":175,"width":215,"orientation":"landscape"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":747,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-11-La-pluma-el-tintero-y-el-secante-Historia-del-mundo-2.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=747","caption":"F"},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-27-C-Nils-Lofgren-y-Bengt-Historia-del-mundo-2.jpg","height":630,"width":764,"orientation":"landscape"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":749,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-27-C-Nils-Lofgren-y-Bengt-Historia-del-mundo-2.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=749","caption":""},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-1.jpg","height":332,"width":247,"orientation":"portrait"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":744,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-1.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=744","caption":"I"},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/1.jpg","height":482,"width":351,"orientation":"portrait"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":743,"url":"http://localhost/labexp/wp-content/uploads/2022/09/1.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=743","caption":""},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-7-3-ABCD-Primer-telefono-celular.jpg","height":249,"width":808,"orientation":"landscape"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":731,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-7-3-ABCD-Primer-telefono-celular.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=731","caption":"H"},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-5-7-Primera-junta-directiva-De-Izq-a-Der.jpg","height":235,"width":147,"orientation":"portrait"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":729,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-5-7-Primera-junta-directiva-De-Izq-a-Der.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=729","caption":"C"},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-3-5-B-TraitE-anatomie-humaine.jpg","height":312,"width":283,"orientation":"portrait"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":726,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-3-5-B-TraitE-anatomie-humaine.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=726","caption":""},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-2-17-B-Placa-de-Burke-co.jpg","height":255,"width":389,"orientation":"landscape"}},"mime":"image/jpeg","type":"image","subtype":"jpeg","id":723,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-2-17-B-Placa-de-Burke-co.jpg","alt":"","link":"http://localhost/labexp/?attachment_id=723","caption":""},{"sizes":{"full":{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-41-C-Placa-de-Danis-con-su-coapteur.png","height":641,"width":152,"orientation":"portrait"}},"mime":"image/png","type":"image","subtype":"png","id":721,"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-41-C-Placa-de-Danis-con-su-coapteur.png","alt":"","link":"http://localhost/labexp/?attachment_id=721","caption":""}],"sources":[{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-11-La-pluma-el-tintero-y-el-secante-Historia-del-mundo-2.jpg","caption":"F"},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-27-C-Nils-Lofgren-y-Bengt-Historia-del-mundo-2.jpg","caption":""},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-1.jpg","caption":"I"},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/1.jpg","caption":""},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-7-3-ABCD-Primer-telefono-celular.jpg","caption":"H"},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-5-7-Primera-junta-directiva-De-Izq-a-Der.jpg","caption":"C"},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-3-5-B-TraitE-anatomie-humaine.jpg","caption":""},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-2-17-B-Placa-de-Burke-co.jpg","caption":""},{"url":"http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-41-C-Placa-de-Danis-con-su-coapteur.png","caption":""}],"commonStyles":{"desktop":" .wp-admin .eb-parent-eb-image-gallery-9vwl1bx { display: block; opacity: 1; } .eb-parent-eb-image-gallery-9vwl1bx { display: block; } ","tab":" .editor-styles-wrapper.wp-embed-responsive .eb-parent-eb-image-gallery-9vwl1bx { display: block; opacity: 1; } .eb-parent-eb-image-gallery-9vwl1bx { display: block; } ","mobile":" .editor-styles-wrapper.wp-embed-responsive .eb-parent-eb-image-gallery-9vwl1bx { display: block; opacity: 1; } .eb-parent-eb-image-gallery-9vwl1bx { display: block; } "},"customCss":"eb-parent-eb-image-gallery-9vwl1bx {\r\n display: flex;\r\n flex-wrap: wrap;\r\n gap: 10px;\r\n}\r\neb-parent-eb-image-gallery-9vwl1bx \u003e li {\r\n height: 300px;\r\n cursor: pointer;\r\n position: relative;\r\n}\r\neb-parent-eb-image-gallery-9vwl1bx li img {\r\n object-fit: cover;\r\n width: 100%;\r\n height: 100%;\r\n vertical-align: middle;\r\n border-radius: 5px;\r\n}\r\n} {\r\n}\r\n"} -->
<div class="wp-block-essential-blocks-image-gallery"><div class="eb-parent-wrapper eb-parent-eb-image-gallery-9vwl1bx "><div class="eb-gallery-img-wrapper eb-image-gallery-9vwl1bx grid overlay-bottom caption-style-0 " data-id="eb-image-gallery-9vwl1bx"><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-11-La-pluma-el-tintero-y-el-secante-Historia-del-mundo-2.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-11-La-pluma-el-tintero-y-el-secante-Historia-del-mundo-2.jpg" image-index="0"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-27-C-Nils-Lofgren-y-Bengt-Historia-del-mundo-2.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-27-C-Nils-Lofgren-y-Bengt-Historia-del-mundo-2.jpg" image-index="1"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-1.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-1.jpg" image-index="2"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/1.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/1.jpg" image-index="3"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-7-3-ABCD-Primer-telefono-celular.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-7-3-ABCD-Primer-telefono-celular.jpg" image-index="4"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-5-7-Primera-junta-directiva-De-Izq-a-Der.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-5-7-Primera-junta-directiva-De-Izq-a-Der.jpg" image-index="5"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-3-5-B-TraitE-anatomie-humaine.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-3-5-B-TraitE-anatomie-humaine.jpg" image-index="6"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-2-17-B-Placa-de-Burke-co.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-2-17-B-Placa-de-Burke-co.jpg" image-index="7"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-41-C-Placa-de-Danis-con-su-coapteur.png" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-41-C-Placa-de-Danis-con-su-coapteur.png" image-index="8"/></span></a></div></div></div>
<!-- /wp:essential-blocks/image-gallery -->
This is the code from the browser > tools > inspect >
<section class="elementor-section elementor-top-section elementor-element elementor-element-800e958 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="800e958" data-element_type="section" data-settings="{"jet_parallax_layout_list":[]}">
<div class="elementor-container elementor-column-gap-default">
<div class="elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6bf7992" data-id="6bf7992" data-element_type="column">
<div class="elementor-widget-wrap elementor-element-populated">
<div class="elementor-element elementor-element-2b6551a elementor-widget elementor-widget-theme-post-content" data-id="2b6551a" data-element_type="widget" data-widget_type="theme-post-content.default">
<div class="elementor-widget-container">
<div class="wp-block-essential-blocks-image-gallery"><div class="eb-parent-wrapper eb-parent-eb-image-gallery-9vwl1bx "><div class="eb-gallery-img-wrapper eb-image-gallery-9vwl1bx grid overlay-bottom caption-style-0 " data-id="eb-image-gallery-9vwl1bx"><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-11-La-pluma-el-tintero-y-el-secante-Historia-del-mundo-2.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-11-La-pluma-el-tintero-y-el-secante-Historia-del-mundo-2.jpg" image-index="0"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-27-C-Nils-Lofgren-y-Bengt-Historia-del-mundo-2.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-27-C-Nils-Lofgren-y-Bengt-Historia-del-mundo-2.jpg" image-index="1"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-1.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-1.jpg" image-index="2"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/1.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/1.jpg" image-index="3"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-7-3-ABCD-Primer-telefono-celular.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-7-3-ABCD-Primer-telefono-celular.jpg" image-index="4"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-5-7-Primera-junta-directiva-De-Izq-a-Der.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-5-7-Primera-junta-directiva-De-Izq-a-Der.jpg" image-index="5"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-3-5-B-TraitE-anatomie-humaine.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-3-5-B-TraitE-anatomie-humaine.jpg" image-index="6"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-2-17-B-Placa-de-Burke-co.jpg" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-2-17-B-Placa-de-Burke-co.jpg" image-index="7"/></span></a><a href="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-41-C-Placa-de-Danis-con-su-coapteur.png" class="eb-gallery-img-content" data-fslightbox="gallery" data-type="image"><span class="eb-gallery-link-wrapper"><img class="eb-gallery-img" src="http://localhost/labexp/wp-content/uploads/2022/09/Figura-1-41-C-Placa-de-Danis-con-su-coapteur.png" image-index="8"/></span></a></div></div></div>
</div>