#4730: Canard: Fix Blog Post block thumbnail background (#5986)

canard/style.css

@@ -2138,9 +2138,7 @@ body:not(.group-blog) .sticky .entry-summary + .entry-meta > span:nth-of-type(3)
 
 /* Post Thumbnail */
 .post-thumbnail {
-	background: #000;
 	display: block;
-	height: 100%;
 	position: relative;
 	width: 100%;
 }