[csswg] Remove span[id] rule. Add a few rules for making Prism-highlighted stuff display better.

--HG--
extra : rebase_source : 29fb5b7f270947c8f549a85579deaf49260dd0b2

Author: tabatkins

default.css

@@ -10,8 +10,6 @@
 		line-height: 1.5;
 	}
 
-	span.id {float: right; font-weight: bold}
-
 /******************************************************************************/
 /*                                Sectioning                                  */
 /******************************************************************************/
@@ -198,6 +196,15 @@
 		overflow: auto;
 	}
 
+/** Syntax-Highlighted Code ***************************************************/
+
+	.example pre[class*="language-"],
+	.example [class*="language-"] pre,
+	.example pre[class*="lang-"],
+	.example [class*="lang-"] pre {
+		background: transparent; /* Prism applies a gray background that doesn't work well in the template. */
+	}
+
 /** Example Code **************************************************************/
 
 	div.html, div.xml,
@@ -251,6 +258,9 @@
 	.type { /* CSS value <type> */
 	font-style: italic;
 	}
+	pre .property::before, pre .property::after {
+		content: "";
+	}
 
 /** Inline markup fragments ***************************************************/