define caption styles

theme.json

@@ -542,6 +542,21 @@
         }
       }
     },
+    "css": "figcaption.wp-element-caption {\n  display: inline-block;\n  margin: 0;\n  padding: 8px 12px;\n}",
+    "elements": {
+      "caption": {
+        "color": {
+          "background": "var(--wp--preset--color--black)",
+          "text": "var(--wp--preset--color--white)"
+        },
+        "typography": {
+          "fontFamily": "var(--wp--preset--font-family--commit-mono)",
+          "fontSize": "12px",
+          "fontWeight": "525",
+          "lineHeight": "1.45"
+        }
+      }
+    },
     "typography": {
       "fontFamily": "sans-serif"
     }