diff --git a/app/javascript/flavours/glitch/styles/components/composer.scss b/app/javascript/flavours/glitch/styles/components/composer.scss
index bb333d35f..ba517a2ab 100644
--- a/app/javascript/flavours/glitch/styles/components/composer.scss
+++ b/app/javascript/flavours/glitch/styles/components/composer.scss
@@ -124,10 +124,71 @@
     white-space: pre-wrap;
     padding-top: 5px;
 
-    p {
+    p, pre, blockquote {
       margin-bottom: 20px;
+      white-space: pre-wrap;
 
-      &:last-child { margin-bottom: 0 }
+      &:last-child {
+        margin-bottom: 0;
+      }
+    }
+
+    h1, h2, h3, h4, h5 {
+      margin-top: 20px;
+      margin-bottom: 20px;
+    }
+
+    h1, h2 {
+      font-weight: 700;
+      font-size: 18px;
+    }
+
+    h2 {
+      font-size: 16px;
+    }
+
+    h3, h4, h5 {
+      font-weight: 500;
+    }
+
+    blockquote {
+      padding-left: 10px;
+      border-left: 3px solid $inverted-text-color;
+      color: $inverted-text-color;
+      white-space: normal;
+
+      p:last-child {
+        margin-bottom: 0;
+      }
+    }
+
+    b, strong {
+      font-weight: 700;
+    }
+
+    em, i {
+      font-style: italic;
+    }
+
+    sub {
+      font-size: smaller;
+      text-align: sub;
+    }
+
+    ul, ol {
+      margin-left: 1em;
+
+      p {
+        margin: 0;
+      }
+    }
+
+    ul {
+      list-style-type: disc;
+    }
+
+    ol {
+      list-style-type: decimal;
     }
 
     a {