diff --git a/README.md b/README.md
index d177ef2..f2393fd 100644
--- a/README.md
+++ b/README.md
@@ -202,6 +202,9 @@ class _HomePageState extends State<HomePage> {
     0.5.sh  //50% of screen height
     20.setVerticalSpacing  // SizedBox(height: 20 * scaleHeight)
     20.horizontalSpace  // SizedBox(height: 20 * scaleWidth)
+    const RPadding.all(8)   // Padding.all(8.r) - take advantage of const key word
+    REdgeInsts.all(8)       // EdgeInsets.all(8.r)
+    EdgeInsets.only(left:8,right:8).r // EdgeInsets.only(left:8.r,right:8.r).
 ```
 
 #### Adapt screen size：
diff --git a/README_CN.md b/README_CN.md
index 7266954..835661f 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -161,6 +161,9 @@ class _HomePageState extends State<HomePage> {
     0.5.sh  //屏幕高度的50%
     20.setVerticalSpacing  // SizedBox(height: 20 * scaleHeight)
     20.horizontalSpace  // SizedBox(height: 20 * scaleWidth)
+    const RPadding.all(8)   // Padding.all(8.r) - take advantage of const key word
+    REdgeInsts.all(8)       // EdgeInsets.all(8.r)
+    EdgeInsets.only(left:8,right:8).r // EdgeInsets.only(left:8.r,right:8.r).
 
 ```
 
diff --git a/README_PT.md b/README_PT.md
index 1466fd0..50473a6 100644
--- a/README_PT.md
+++ b/README_PT.md
@@ -151,6 +151,9 @@ class _HomePageState extends State<HomePage> {
     0.5.sh  //50% altura da tela
     20.setVerticalSpacing  // SizedBox(height: 20 * scaleHeight)
     20.horizontalSpace  // SizedBox(height: 20 * scaleWidth)
+    const RPadding.all(8)   // Padding.all(8.r) - take advantage of const key word
+    REdgeInsts.all(8)       // EdgeInsets.all(8.r)
+    EdgeInsets.only(left:8,right:8).r // EdgeInsets.only(left:8.r,right:8.r).
 ```
 
 #### Adaptar o tamanho da tela：