diff --git a/src/markd/core.js b/src/markd/core.js
index e7aead5..dd5aa28 100644
--- a/src/markd/core.js
+++ b/src/markd/core.js
@@ -521,13 +521,23 @@ class Tool {
           continue
         }
 
-        if (isParagraph) {
+        if (isHtmlBlock || isSingleLineHtml) {
+          if (isParagraph) {
+            isParagraph = false
+            html = trimBr(html)
+            html += '</p>'
+          }
+          html += `${it}\n`
+        } else if (isMultiLineHtml) {
+          if (isParagraph) {
+            isParagraph = false
+            html = trimBr(html)
+            html += '</p>'
+          }
+          isHtmlBlock = !isHtmlBlock
           html += `${it}\n`
         } else {
-          if (isHtmlBlock || isSingleLineHtml) {
-            html += `${it}\n`
-          } else if (isMultiLineHtml) {
-            isHtmlBlock = !isHtmlBlock
+          if (isParagraph) {
             html += `${it}\n`
           } else {
             html += `\n<p>${it}`
diff --git a/src/markd/index.js b/src/markd/index.js
index e16c7e3..1d366a6 100644
--- a/src/markd/index.js
+++ b/src/markd/index.js
@@ -68,6 +68,10 @@ class Markd extends Component {
       p {
         margin: 0;
       }
+      > blockquote {
+        margin: 5px 0;
+        padding: 0 10px;
+      }
     }
 
     fieldset.md-hr {
@@ -193,7 +197,6 @@ class Markd extends Component {
   `
 
   render() {
-    // console.log(md2html(this.code))
     return html`<div class="container">${raw(md2html(this.code))}</div>`
   }
 }
diff --git a/src/scroll/index.js b/src/scroll/index.js
index 02759a0..962bda2 100644
--- a/src/scroll/index.js
+++ b/src/scroll/index.js
@@ -392,7 +392,7 @@ class Scroll extends Component {
     this.__observer.observe(this.$refs.cont)
   }
   unmounted() {
-    this.__observer.disconnect()
+    this.__observer?.disconnect()
   }
 
   render() {