[css-table] removed investigation page

Author: gregwhitworth

css-tables-3/Overview.bs

@@ -701,8 +701,10 @@ spec:css21; type:property; text:max-width
 			<figcaption>Overview of the table layout algorithm. Not normative.</figcaption>
 		</figure>
 
-		<div class="investigation" id="investigation-1">
-			<a href="investigations.html#investigation-1" target="_blank">View investigation information</a>
+		<div class="issue">
+			<a class="hint" href="https://jsfiddle.net/sckxeLmh/2/">!Test case</a>
+			<a class="hint" href="https://jsfiddle.net/sckxeLmh/4/">!!Test case</a>
+			<a class="hint" href="https://jsfiddle.net/sckxeLmh/5/">!!Test case</a>
 		</div>
 
 	<!--------------------------------------------------------------------------------->
@@ -3158,13 +3160,6 @@ spec:css21; type:property; text:max-width
 	.hint:hover { opacity: 1; }
 
 	.highlight { background: yellow; }
-	.investigation {
-		position: relative;
-		border-left: 8px solid #162955;
-		background: #B9C0D0;
-		padding: .5em;
-		margin: 1em auto;
-	}
 
 	/* fallback for summary/details */
 	details { display: block; font-weight: normal !important; }