Adding a column in the media list page (no action yet)

assets/wp-pdf-helper.css

@@ -1,69 +0,0 @@
-
-video, 
-.attached-videos,
-header, 
-.plyr, 
-.leaflet-marker-photo, 
-.leaflet-top, 
-#wpgpxmaps_downloadfile,
-div:empty,
-nav,
-.wp-block-comments,
-.wp-block-query,
-footer,
-.other-posts,
-.no-print,
-#wpadminbar,
-.skip-link.screen-reader-text
-{
-	display: none !important;
-}
-
-html,
-main,
-#post-content {
-	padding: 0px !important;
-	margin: 0px !important;
-}
-
-.gallery,
-.attached-gpx {
-    page-break-before: auto; /* 'always,' 'avoid,' 'left,' 'inherit,' or 'right' */
-    page-break-after: auto; /* 'always,' 'avoid,' 'left,' 'inherit,' or 'right' */
-    page-break-inside: avoid; /* or 'auto' */
-}
-
-#post-grid {
-	display: flex;
-}
-
-#post-grid-column2 {
-	flex: 70%;
-	padding-left: 10px;
-}
-
-.attached-gpxes {
-	flex: 30%;
-}
-
-.wpgpxmaps_summary {
-	font-size: var(--wp--preset--font-size--small);
-}
-
-.leaflet-control-attribution {
-	font-size: 8px;
-}
-
-.date-prefix {
-	text-transform: capitalize;
-}
-
-.author-line, .author-line > * {
-	margin-bottom: 0px !important;
-	margin-top: 5px !important;
-	font-size: var(--wp--preset--font-size--medium) !important;
-}
-
-.entry-content, wp-block-post-excerpt {
-	text-align: justify;
-