Small redesign

public/index.js

@@ -1,4 +1,4 @@
-const slider = document.getElementById('minDifference')
+const slider = document.getElementById('min-difference')
 
 slider.addEventListener('input', function (event) {
   const table = document.getElementById('items')
@@ -10,5 +10,5 @@ slider.addEventListener('input', function (event) {
     }
   })
 
-  document.getElementById('filterValue').innerText = event.target.value
+  document.getElementById('filter-value').innerText = event.target.value
 })