style error

client/src/Preview.js

@@ -3,13 +3,20 @@ import React from 'react';
 export default props => {
   if (props.pdfIsLoading) {
     return (
-      <div>Lade...</div>
+      <div>Lade&hellip;</div>
     );
   }
 
+  const errorStyles = {
+    padding: '6px 12px',
+    color: 'white',
+    backgroundColor: '#d81e1e',
+    borderRadius: '3px',
+  };
+
   if (props.pdfError) {
     return (
-      <div>{props.pdfError}</div>
+      <div style={errorStyles}>&#xe413; {props.pdfError}</div>
     );
   }