test -- remove log & update scrollItemToMidpoint fn

src/js/01-nav.js

@@ -159,15 +159,8 @@
   function scrollItemToMidpoint (panel, el) {
     var rect = panel.getBoundingClientRect()
     var effectiveHeight = rect.height
-    var navStyle = window.getComputedStyle(nav)
-    console.log('panel height >>>>> ', effectiveHeight)
-    console.log('el hight >>>>> ', el.getBoundingClientRect().height)
-    console.log('calculated top >>>>> ',
-      Math.max(0, (el.getBoundingClientRect().height - effectiveHeight) * 0.5 + el.offsetTop))
+    var navStyle = window.getComputedStyle(panel)
     if (navStyle.position === 'sticky') effectiveHeight -= rect.top - parseFloat(navStyle.top)
-    console.log('rect top >>>>> ', rect.top)
-    console.log('navStyle top >>>>> ', parseFloat(navStyle.top))
-    console.log('calculated panel height >>>>> ', effectiveHeight)
     panel.scrollTop = Math.max(0, (el.getBoundingClientRect().height - effectiveHeight) * 0.5 + el.offsetTop)
   }