tweak pic rendering a bit

crates/treehouse/src/html/markdown.rs

@@ -292,7 +292,7 @@ where
                 self.write("\">")
             }
             Tag::Image(_link_type, dest, title) => {
-                self.write("<img src=\"")?;
+                self.write("<img class=\"pic\" src=\"")?;
                 escape_href(&mut self.writer, &dest)?;
                 self.write("\" alt=\"")?;
                 self.raw_text()?;

static/css/main.css

@@ -232,6 +232,13 @@ img {
     max-width: 100%;
 }
 
+/* Also regarding images - make them look a bit more pretty by default */
+
+img.pic {
+    border-radius: 6px;
+    margin: 8px 0;
+}
+
 /* Fix the default blue and ugly purple links normally have */
 
 a {