subtraction: changed grid to ul li

src/Subtraction.js

@@ -171,15 +171,14 @@ function Subtraction() {
     }else{
       nos = numbers;
     }
-    let table = document.getElementById("numbersGrid");
-    table.innerHTML = "";
+    let ul = document.getElementById("numbersGrid");
+    ul.innerHTML = "";
     for(let noIdx in nos){
-      let row = table.insertRow();
-      let cell = row.insertCell();
-      let cellText = nos[noIdx].join("");
-      cell.innerHTML = cellText;
-      cell.tabIndex = "0";
-      cell.id = "numbersTd" + noIdx;
+      let li = document.createElement("li");
+      li.innerHTML = nos[noIdx].join("");
+      li.tabIndex = "0";
+      li.id = "numbersTd" + noIdx;
+      ul.appendChild(li);
     }
   };
 
@@ -558,11 +557,11 @@ function Subtraction() {
       <div id="commaWarning"></div>
 
       <div id="overview">
-        <table
+        <ul
           id="numbersGrid"
           onKeyDown={handleKeyMoveComma}
         >
-        </table>
+        </ul>
 
         <input type="submit"
           value="Komma best&auml;tigen"