diff --git a/app.py b/app.py
index 5b5aaf5..863e14b 100644
--- a/app.py
+++ b/app.py
@@ -88,10 +88,12 @@ async def result(request: Request, scale_id: str):
         ranges = {}
         for subscale, qids in scale['subscales'].items():
             responses[subscale] = 0
-            ranges[subscale] = [len(scale['range'][0]*qids),len(scale['range'][1]*qids)]
+            min_val = min(scale['range'].keys())
+            max_val = max(scale['range'].keys())
+            ranges[subscale] = [min_val*len(qids),max_val*len(qids)]
             for qid in qids:
                 if qid<0:
-                    responses[subscale] += scale['range'][0] + scale['range'][1] - int(form_data[str(-qid)])
+                    responses[subscale] += min_val + max_val - int(form_data[str(-qid)])
                 else:
                     responses[subscale] += int(form_data[str(qid)])
         return templates.TemplateResponse("result.html", {
diff --git a/static/styles.css b/static/styles.css
index 431a706..6c3af55 100644
--- a/static/styles.css
+++ b/static/styles.css
@@ -119,7 +119,11 @@ main {
         display: flex;
 
         input[type="radio"] {
-            display: none;
+            position: absolute;
+            clip: rect(0 0 0 0);
+            width: 1px;
+            height: 1px;
+            margin: -1px;
         }
 
         label {
diff --git a/templates/scale.html b/templates/scale.html
index 33ce9f8..0ea4df2 100644
--- a/templates/scale.html
+++ b/templates/scale.html
@@ -14,8 +14,7 @@
     <label for="{{ id }}">{{ id }}. {{ question }}</label>
     <div class="scale-button">
         {% for option, lable in scale.range.items() %}
-        <input type="radio" id="{{ id }}_{{ option }}" name="{{ id }}" value="{{ option }}" {% if not ( 'optional' in
-            question and question.optional) %}required{% endif %}>
+        <input type="radio" id="{{ id }}_{{ option }}" name="{{ id }}" value="{{ option }}" required>
         <label for="{{ id }}_{{ option }}">{{ option }}</label>
         {% endfor %}
     </div>