Add styles for h1/2/3/4/5 tags in status html for rich text

src/components/status/status.vue

@@ -335,11 +335,36 @@
       font-style: italic;
     }
 
+    pre {
+      overflow: auto;
+    }
+
     p {
       margin: 0;
       margin-top: 0.2em;
       margin-bottom: 0.5em;
     }
+
+    h1 {
+      font-size: 1.1em;
+      line-height: 1.2em;
+      margin: 1.6em 0;
+    }
+
+    h2 {
+      line-height: 1.2em;
+      font-size: 1.2em;
+      margin: 1.4em 0;
+    }
+
+    h3 {
+      font-size: 1em;
+      margin: 1.3em 0;
+    }
+
+    h4 {
+      margin: 1.2em 0;
+    }
   }
 
   .retweet-info {