Add offenders to imageOptimization

front/src/less/rule.less

@@ -176,16 +176,18 @@
     }
 }
 
-.colorPalette {
-    width: 30em;
-    border: 2px solid #000;
-    text-align: left;
-
+.checker {
     /* Checkerboard background */
     background-color: #ddd;
     background-image: linear-gradient(45deg, #AAA 25%, transparent 25%, transparent 75%, #AAA 75%, #AAA), linear-gradient(45deg, #AAA 25%, transparent 25%, transparent 75%, #AAA 75%, #AAA);
     background-size:1em 1em;
     background-position:0 0, 0.5em 0.5em;
+}
+
+.colorPalette {
+    width: 30em;
+    border: 2px solid #000;
+    text-align: left;
 
     > div {
         display: inline-block;
@@ -235,4 +237,26 @@
 .hugeFile {
     font-weight: bold;
     color: #e74c3c;
+}
+
+.imageOffenders {
+    display: table;
+    border-spacing: 3em;
+    width: 90%;
+
+    > div {
+        display: table-row;
+
+        > div {
+            display: table-cell;
+            vertical-align: middle;
+        }
+    }
+
+    img {
+        max-height: 10em;
+        max-width: 40em;
+        border: 1px solid #000;
+        margin-top: 0.5em;
+    }
 }