move position: relative to where it's needed (sveltejs#77)

* move position: relative to where its needed

* this is also surplus to requirements apparently

Author: Rich-Harris

src/lib/components/SplitPane.svelte

@@ -174,8 +174,6 @@
 	}
 
 	.pane {
-		position: relative;
-		float: left;
 		width: 100%;
 		height: 100%;
 		overflow: auto;

src/routes/tutorial/[slug]/index.svelte

@@ -408,6 +408,7 @@
 	}
 
 	.navigator {
+		position: relative;
 		background: white;
 		display: flex;
 		flex-direction: column;