diff --git a/assets/styles/main.scss b/assets/styles/main.scss
index d22f3ec08..662b8bb0d 100644
--- a/assets/styles/main.scss
+++ b/assets/styles/main.scss
@@ -78,45 +78,6 @@ blockquote {
   }
 }
 
-.hc-editor-content {
-  h1,
-  h2,
-  h3,
-  h4,
-  h5,
-  h6 {
-    &:not(:first-child) {
-      margin-top: 2rem;
-    }
-  }
-  p {
-    &:not(:last-child) {
-      margin-top: 0;
-      margin-bottom: 0;
-    }
-  }
-  dl,
-  ol,
-  ul,
-  blockquote,
-  pre,
-  table {
-    &:not(:first-child) {
-      margin-top: 15px;
-    }
-  }
-  *:first-child {
-    margin-top: 0;
-  }
-  *:last-child {
-    margin-bottom: 0;
-  }
-  // avoid double breaks
-  br + p {
-    margin-top: 0;
-  }
-}
-
 hr {
   border: 0;
   width: 100%;
diff --git a/components/Editor/plugins/eventHandler.js b/components/Editor/plugins/eventHandler.js
index 46137f5c1..b3e41ace5 100644
--- a/components/Editor/plugins/eventHandler.js
+++ b/components/Editor/plugins/eventHandler.js
@@ -15,18 +15,33 @@ export default class EventHandler extends Extension {
           },
           transformPastedHTML(html) {
             html = html
-              .replace(/(<br\s*\/*>\s*){2,}/gim, '<br/>')
+              // remove all tags with "space only"
+              .replace(/<[a-z-]+>[\s]+<\/[a-z-]+>/gim, '')
+              // remove all iframes
               .replace(
-                /<\/(p|div|th|tr)>\s*(<br\s*\/*>\s*)+\s*<(p|div|th|tr)>/gim,
-                '</p><p>'
-              )
-              .replace(
-                /<(p|div|th|tr)>\s*(<br\s*\/*>\s*)+\s*<\/(p|div|th|tr)>/gim,
+                /(<iframe(?!.*?src=(['"]).*?\2)[^>]*)(>)[^>]*\/*>/gim,
                 ''
               )
-              .replace(/<(p|div|th|tr)>\s*/gim, '<p>')
-              .replace(/\s*<\/(p|div|th|tr)>/gim, '</p>')
+              .replace(/[\n]{3,}/gim, '\n\n')
+              .replace(/(\r\n|\n\r|\r|\n)/g, '<br>')
 
+              // replace all p tags with line breaks (and spaces) only by single linebreaks
+              // limit linebreaks to max 2 (equivalent to html "br" linebreak)
+              .replace(/(<br ?\/?>\s*){2,}/gim, '<br>')
+              // remove additional linebreaks after p tags
+              .replace(
+                /<\/(p|div|th|tr)>\s*(<br ?\/?>\s*)+\s*<(p|div|th|tr)>/gim,
+                '</p><p>'
+              )
+              // remove additional linebreaks inside p tags
+              .replace(
+                /<[a-z-]+>(<[a-z-]+>)*\s*(<br ?\/?>\s*)+\s*(<\/[a-z-]+>)*<\/[a-z-]+>/gim,
+                ''
+              )
+              // remove additional linebreaks when first child inside p tags
+              .replace(/<p>(\s*<br ?\/?>\s*)+/gim, '<p>')
+              // remove additional linebreaks when last child inside p tags
+              .replace(/(\s*<br ?\/?>\s*)+<\/p>/gim, '</p>')
             // console.log('#### transformPastedHTML', html)
             return html
           }