making display nice

public/css/examples.css

@@ -1,8 +1,15 @@
 html, body {
+	margin: 0;
+	padding:0 1%;
 	height: 100%;
 }
+h1 {
+	padding-top: 1em;
+	margin:0;
+}
 svg {
 	width: 100%;
 	height:calc(100% - 10em);
 	border: 1px solid black;
+	box-sizing: border-box;
 }