Add required attrinute to sizes

Author: Alaterry8

Form-Controls/index.html

@@ -46,7 +46,7 @@ <h1>Product Pick</h1>
             <legend>Size</legend>
 
             <label for="XS"> XS</label>
-            <input type="radio" name="size" id="XS" value="XS">
+            <input type="radio" name="size" id="XS" value="XS" required>
             <br>
 
             <label for="S">S</label>