diff --git a/isotables/isotables/settings.py b/isotables/isotables/settings.py
index 42a6af9..75f4b71 100644
--- a/isotables/isotables/settings.py
+++ b/isotables/isotables/settings.py
@@ -25,7 +25,7 @@ SECRET_KEY = 'django-insecure-3w!#8kidc1=!ehn_@b$*d@w-h!p(d(gm$*68i!9u%u#i-89=$@
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
 
-ALLOWED_HOSTS = []
+ALLOWED_HOSTS = ['*']
 
 
 # Application definition
diff --git a/isotables/isotopapp/.views.py.swp b/isotables/isotopapp/.views.py.swp
new file mode 100644
index 0000000..fc7a50e
Binary files /dev/null and b/isotables/isotopapp/.views.py.swp differ
diff --git a/isotables/isotopapp/views.py b/isotables/isotopapp/views.py
index 723b6a3..6029f3e 100644
--- a/isotables/isotopapp/views.py
+++ b/isotables/isotopapp/views.py
@@ -73,8 +73,8 @@ def result(request):
         w_upper = Wedge((0,2.5), radius, theta1, theta2, fc='#D5D9FF42', edgecolor='black')
         w_lower = Wedge((0,-2.5), radius, theta1, theta2, fc='#D5D9FF42', edgecolor='black')
 
-        ax.set_xlim([-8, 8])
-        ax.set_ylim([-8, 8])
+        ax.set_xlim([-5.5, 5.5])
+        ax.set_ylim([-5.5, 5.5])
         ax.grid(True)
 
         ax.add_patch(w_upper)
@@ -95,12 +95,14 @@ def result(request):
                 close_isotopes.append(i_info)
 
                 arr = FancyArrowPatch((-2.5,z*1e3), (2.5, z*1e3),
-                               arrowstyle='<->,head_width=.1', mutation_scale=20, linewidth=2)
+                               arrowstyle='-', mutation_scale=20, linewidth=2)
                 ax.add_patch(arr)
                 ax.annotate(f"{isotope.n_nucleons}{isotope.symbol}", (1.1, 0), xycoords=arr, ha='left', va='center',fontsize=8)
+        ax.annotate(f"{isotope1.n_nucleons}{isotope1.symbol}: {freq:.1f}MHz\ng={gradient:.1f}T/m",
+                    (0.91, -0.45), xycoords=w,
+                    ha='left', va='center',fontsize=11)
 
         ax.set_aspect('equal')
-
         ax.set_ylabel('z (mm)')
 
         buf = BytesIO()
diff --git a/requirements.txt b/requirements.txt
index ee40f0f..5238dc0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
 Django==5.1.6
+matplotlib==3.10.1