diff --git a/Readme.org b/Readme.org
index 10ea593..c80d030 100755
--- a/Readme.org
+++ b/Readme.org
@@ -15,6 +15,7 @@
 #+REVEAL_HEAD_PREAMBLE: <meta name="description" content="Org-Reveal Introduction.">
 #+REVEAL_POSTAMBLE: <p> Created by yjwen. </p>
 #+REVEAL_PLUGINS: (highlight markdown notes)
+#+REVEAL_EXTRA_CSS: ./local.css
 
 * Reveal.js and Org-Reveal
 
diff --git a/local.css b/local.css
new file mode 100644
index 0000000..5d90fe3
--- /dev/null
+++ b/local.css
@@ -0,0 +1,3 @@
+.reveal p {
+    text-align: left;
+}
\ No newline at end of file