diff --git a/apps/main/static/css/style.css b/apps/main/static/css/style.css
index 2cca280..0d3accb 100644
--- a/apps/main/static/css/style.css
+++ b/apps/main/static/css/style.css
@@ -21,6 +21,19 @@
     --bx-shadow: 0 2px 5px 0 var(--bs-nav);
   }
 
+label {
+  display: inline-block;
+  max-width: 100%;
+  margin-bottom: 5px;
+  font-weight: bold;
+}
+
+.form-check-input {
+  position: relative; 
+  margin-top: .3rem; 
+  margin-left: .3rem; 
+}
+
 body {
     color: #444;
     font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
diff --git a/apps/main/views.py b/apps/main/views.py
index 022558e..e2038a9 100644
--- a/apps/main/views.py
+++ b/apps/main/views.py
@@ -849,6 +849,8 @@ def experiment_mix(request, id_exp):
         mix.save()
 
         line_type = RCLineType.objects.get(name='mix')
+        print("VIew obteniendo len getlines")
+        print(len(rc_confs[0].get_lines()))
         for i in range(len(rc_confs[0].get_lines())):
             line = RCLine(rc_configuration=mix, line_type=line_type, channel=i)
             line.save()
diff --git a/apps/rc/models.py b/apps/rc/models.py
index 237cd18..3deefc6 100644
--- a/apps/rc/models.py
+++ b/apps/rc/models.py
@@ -347,8 +347,10 @@ class RCConfiguration(Configuration):
         return '\n'.join(['{}'.format(x) for x in data])
 
     def update_pulses(self):
-
+        contador = 0
         for line in self.get_lines():
+            contador=contador+1
+            print(contador)
             line.update_pulses()
 
     def plot_pulses2(self, km=False):
@@ -918,8 +920,15 @@ class RCLine(models.Model):
             ops = [value.split('|')[2] for value in values]
             delays = [value.split('|')[3] for value in values]
             masks = [value.split('|')[4] for value in values]
+            print("masks")
+            print(masks)
+            print('{:8b}'.format(int(masks[0])))
             mask = list('{:8b}'.format(int(masks[0])))
+            print("mask")
+            print(mask)
             mask.reverse()
+            print("mask reverse")
+            print(mask)
             if mask[self.channel] in ('0', '', ' '):
                 y = np.zeros(confs[0].total_units, dtype=np.int8)
             else:
diff --git a/apps/rc/widgets.py b/apps/rc/widgets.py
index a0be41a..fd14c7c 100644
--- a/apps/rc/widgets.py
+++ b/apps/rc/widgets.py
@@ -300,7 +300,7 @@ class HCheckboxSelectMultiple(forms.CheckboxSelectMultiple):
 
         if value is None: value = []
         has_id = attrs and 'id' in attrs
-        final_attrs = self.build_attrs(attrs, name=name)
+        final_attrs = self.build_attrs(attrs, {'name': name})
         output = [u'<br><ul>']
         # Normalize to strings
         str_values = set([force_text(v) for v in value])
diff --git a/static/css/style.css b/static/css/style.css
index 2cca280..0d3accb 100644
--- a/static/css/style.css
+++ b/static/css/style.css
@@ -21,6 +21,19 @@
     --bx-shadow: 0 2px 5px 0 var(--bs-nav);
   }
 
+label {
+  display: inline-block;
+  max-width: 100%;
+  margin-bottom: 5px;
+  font-weight: bold;
+}
+
+.form-check-input {
+  position: relative; 
+  margin-top: .3rem; 
+  margin-left: .3rem; 
+}
+
 body {
     color: #444;
     font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;