diff --git a/src/core/forms.py b/src/core/forms.py
index d5466c9..ed2a5fc 100644
--- a/src/core/forms.py
+++ b/src/core/forms.py
@@ -28,7 +28,8 @@ class CommentCreateForm(forms.ModelForm):
         message = self.cleaned_data.get('content')
         post = Post.objects.get(pk=self.cleaned_data['object_id'])
         recipients = list(post.recipients.all().values_list('email', flat=True))
-        recipients.remove(author.email)
+        if author in recipients:
+            recipients.remove(author.email)
 
         send_mail(
             post.title,
diff --git a/src/core/migrations/0006_alter_post_recipients.py b/src/core/migrations/0006_alter_post_recipients.py
new file mode 100644
index 0000000..70e8284
--- /dev/null
+++ b/src/core/migrations/0006_alter_post_recipients.py
@@ -0,0 +1,20 @@
+# Generated by Django 4.0.6 on 2022-07-20 21:37
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('core', '0005_post_recipients'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='post',
+            name='recipients',
+            field=models.ManyToManyField(blank=True, null=True, related_name='subscriptions', to=settings.AUTH_USER_MODEL),
+        ),
+    ]
diff --git a/src/core/models.py b/src/core/models.py
index 6ce3379..e405cf3 100644
--- a/src/core/models.py
+++ b/src/core/models.py
@@ -129,6 +129,8 @@ class Post(models.Model):
     comments = GenericRelation(Comment, related_query_name='parent')
     recipients = models.ManyToManyField(
         User,
+        blank=True,
+        null=True,
         related_name='subscriptions'
     )
     tags = GenericRelation(Tag)
diff --git a/src/static/styles/main.css b/src/static/styles/main.css
index 671085f..dc863df 100644
--- a/src/static/styles/main.css
+++ b/src/static/styles/main.css
@@ -125,7 +125,8 @@ tbody tr.has-link {
 textarea {
     box-sizing: border-box;
     font: inherit;
-    font-size: 1.25rem;
+    font-family: 'PT Mono', monospace;
+    font-size: 2rem;
     padding: 0.5rem 1rem;
     width: 100%;
     resize: vertical;
@@ -134,6 +135,7 @@ textarea {
 
 
 button,
+input[type=submit],
 .action-button {
     cursor: pointer;
     border: none;
@@ -248,8 +250,41 @@ main {
 }
 .post__content {
     font-family: 'STIX Two Text';
-    font-size: 200%;
+    font-size: 2rem;
     margin-bottom: 4rem;
+    line-height: 1.75;
+}
+
+.post__content h1,
+.post__content h2,
+.post__content h3,
+.post__content h4,
+.post__content h5 {
+    font-family: 'STIX Two Text';
+    text-transform: unset;
+    margin: 2em 0 1em;
+}
+
+.post__content h1 {
+    font-size: 1.802em;
+}
+.post__content h2 {
+    font-size: 1.602em;
+}
+.post__content h3 {
+    font-size: 1.424em;
+}
+.post__content h4 {
+    font-size: 1.266em;
+}
+.post__content h5 {
+    font-size: 1.125em;
+}
+
+.post__content blockquote {
+    padding: 0.5rem 1rem;
+    margin: 0 0 1rem;
+    padding-left: 3rem;
 }
 
 
@@ -270,7 +305,7 @@ main {
 
 .comment__content {
     font-family: 'STIX Two Text';
-    font-size: 200%;
+    font-size: 2rem;
     /*max-width: 64ch;*/
 }
 
@@ -300,6 +335,13 @@ main {
     font-size: 1.125em;
 }
 
+.comment__content blockquote {
+    font-size: 1.75rem;
+    padding: 0.5rem 1rem;
+    margin: 0 0 1rem;
+    padding: 0 5rem;
+}
+
 .comment p {
     line-height: 1.75;
 }
@@ -309,7 +351,7 @@ main {
 
 
 .comments__form textarea {
-    font-family: 'STIX Two Text';
-    font-size: 200%;
+    font-family: 'PT Mono';
+    font-size: 2rem;
     line-height: 1.75;
 }
diff --git a/src/templates/base.html b/src/templates/base.html
index 16aaff6..b63dfb6 100644
--- a/src/templates/base.html
+++ b/src/templates/base.html
@@ -11,7 +11,7 @@
 
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-    <link href="https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,700;0,900;1,400;1,700;1,900&family=STIX+Two+Text:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">
+    <link href="https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,700;0,900;1,400;1,700;1,900&family=PT+Mono&family=STIX+Two+Text:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet"> 
 
     {% compress css %}
     <link rel="stylesheet" type="text/css" href="{% static "styles/main.css" %}">